Search a number
-
+
159619149690 = 2357111322329613
BaseRepresentation
bin1001010010101000001…
…0101110111101111010
3120021000010120221120220
42110222002232331322
510103400000242230
6201154504200510
714350340246310
oct2245202567572
9507003527526
10159619149690
116176a937740
1226b28169136
131208a3a1700
147a230d60b0
15424330cd10
hex252a0aef7a

159619149690 has 768 divisors, whose sum is σ = 559185223680. Its totient is φ = 28229160960.

The previous prime is 159619149653. The next prime is 159619149691. The reversal of 159619149690 is 96941916951.

It is a happy number.

It is a super-2 number, since 2×1596191496902 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159619149691) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 260389824 + ... + 260390436.

It is an arithmetic number, because the mean of its divisors is an integer number (728105760).

Almost surely, 2159619149690 is an apocalyptic number.

159619149690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 159619149690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279592611840).

159619149690 is an abundant number, since it is smaller than the sum of its proper divisors (399566073990).

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

159619149690 is a wasteful number, since it uses less digits than its factorization.

159619149690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 60.

The spelling of 159619149690 in words is "one hundred fifty-nine billion, six hundred nineteen million, one hundred forty-nine thousand, six hundred ninety".