155896064518660 has 24 divisors (see below), whose sum is σ = 329190474366936. Its totient is φ = 62013904116480.

The previous prime is 155896064518657. The next prime is 155896064518723. The reversal of 155896064518660 is 66815460698551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8312830707204 + 147583233811456 = 2883198^2 + 12148384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155896064518660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21532601977 + ... + 21532609216.

It is an arithmetic number, because the mean of its divisors is an integer number (13716269765289).

Almost surely, 2^{155896064518660} is an apocalyptic number.

155896064518660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155896064518660 is an abundant number, since it is smaller than the sum of its proper divisors (173294409848276).

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

155896064518660 is a wasteful number, since it uses less digits than its factorization.

155896064518660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43065211383 (or 43065211381 counting only the distinct ones).

The product of its (nonzero) digits is 373248000, while the sum is 70.

The spelling of 155896064518660 in words is "one hundred fifty-five trillion, eight hundred ninety-six billion, sixty-four million, five hundred eighteen thousand, six hundred sixty".