155705580712 has 32 divisors (see below), whose sum is σ = 325265051520. Its totient is φ = 69269405440.

The previous prime is 155705580703. The next prime is 155705580727. The reversal of 155705580712 is 217085507551.

It is a super-2 number, since 2×155705580712² (a number of 23 digits) contains 22 as substring.

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, 18819073 + ... + 18827344.

It is an arithmetic number, because the mean of its divisors is an integer number (10164532860).

Almost surely, 2^155705580712 is an apocalyptic number.

It is an amenable number.

155705580712 is an abundant number, since it is smaller than the sum of its proper divisors (169559470808).

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

155705580712 is a wasteful number, since it uses less digits than its factorization.

155705580712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37646481 (or 37646477 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 46.

The spelling of 155705580712 in words is "one hundred fifty-five billion, seven hundred five million, five hundred eighty thousand, seven hundred twelve".