Search a number
-
+
157288881788 = 22172313071791
BaseRepresentation
bin1001001001111100100…
…1011101111001111100
3120000222201210001222022
42102133021131321330
510034111423204123
6200131342335312
714235523302323
oct2223711357174
9500881701868
10157288881788
11607845229a5
122659788a538
1311aa868c66c
1478818290ba
15415895d1c8
hex249f25de7c

157288881788 has 12 divisors (see below), whose sum is σ = 291447045792. Its totient is φ = 74018297280.

The previous prime is 157288881787. The next prime is 157288881793. The reversal of 157288881788 is 887188882751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157288881787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156535828 + ... + 1156535963.

It is an arithmetic number, because the mean of its divisors is an integer number (24287253816).

Almost surely, 2157288881788 is an apocalyptic number.

It is an amenable number.

157288881788 is a deficient number, since it is larger than the sum of its proper divisors (134158164004).

157288881788 is a wasteful number, since it uses less digits than its factorization.

157288881788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313071812 (or 2313071810 counting only the distinct ones).

The product of its digits is 128450560, while the sum is 71.

The spelling of 157288881788 in words is "one hundred fifty-seven billion, two hundred eighty-eight million, eight hundred eighty-one thousand, seven hundred eighty-eight".

Divisors: 1 2 4 17 34 68 2313071791 4626143582 9252287164 39322220447 78644440894 157288881788