Search a number
-
+
1497853811808 = 253669192921
BaseRepresentation
bin10101110010111111000…
…010110101110001100000
312022012020000012111000000
4111302333002311301200
5144020101033434213
63104034325300000
7213134133221064
oct25627702656140
95265200174000
101497853811808
11528266478442
12202364264600
13ab3298a6373
14526d45d9aa4
1528e68c5bc73
hex15cbf0b5c60

1497853811808 has 168 divisors, whose sum is σ = 4427773070616. Its totient is φ = 498556684800.

The previous prime is 1497853811743. The next prime is 1497853811809. The reversal of 1497853811808 is 8081183587941.

1497853811808 is a `hidden beast` number, since 1 + 4 + 9 + 7 + 8 + 538 + 11 + 80 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497853811809) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16073188 + ... + 16166108.

It is an arithmetic number, because the mean of its divisors is an integer number (26355792087).

Almost surely, 21497853811808 is an apocalyptic number.

1497853811808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1497853811808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2213886535308).

1497853811808 is an abundant number, since it is smaller than the sum of its proper divisors (2929919258808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1497853811808 is an frugal number, since it uses more digits than its factorization.

1497853811808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93640 (or 93617 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 63.

The spelling of 1497853811808 in words is "one trillion, four hundred ninety-seven billion, eight hundred fifty-three million, eight hundred eleven thousand, eight hundred eight".