159637817412 has 60 divisors (see below), whose sum is σ = 417432786540. Its totient is φ = 53198835264.

The previous prime is 159637817411. The next prime is 159637817477. The reversal of 159637817412 is 214718736951.

159637817412 is a `hidden beast` number, since 1 + 5 + 96 + 378 + 174 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22905006336 + 136732811076 = 151344^2 + 369774^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (159637817411) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1230678 + ... + 1354194.

It is an arithmetic number, because the mean of its divisors is an integer number (6957213109).

Almost surely, 2^159637817412 is an apocalyptic number.

159637817412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

159637817412 is an abundant number, since it is smaller than the sum of its proper divisors (257794969128).

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

159637817412 is a wasteful number, since it uses less digits than its factorization.

159637817412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127522 (or 127511 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 159637817412 in words is "one hundred fifty-nine billion, six hundred thirty-seven million, eight hundred seventeen thousand, four hundred twelve".