155506923032 has 16 divisors (see below), whose sum is σ = 291883388760. Its totient is φ = 77671352704.

The previous prime is 155506923029. The next prime is 155506923049. The reversal of 155506923032 is 230329605551.

It is a happy number.

It is a super-2 number, since 2×155506923032² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10255553 + ... + 10270704.

Almost surely, 2^155506923032 is an apocalyptic number.

It is an amenable number.

155506923032 is a deficient number, since it is larger than the sum of its proper divisors (136376465728).

155506923032 is a wasteful number, since it uses less digits than its factorization.

155506923032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20527210 (or 20527206 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 155506923032 in words is "one hundred fifty-five billion, five hundred six million, nine hundred twenty-three thousand, thirty-two".