155121552120032 has 24 divisors (see below), whose sum is σ = 305408388442752. Its totient is φ = 77557516960000.

The previous prime is 155121552120023. The next prime is 155121552120049. The reversal of 155121552120032 is 230021255121551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155121552119974 and 155121552120001.

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, 101073344 + ... + 102596607.

It is an arithmetic number, because the mean of its divisors is an integer number (12725349518448).

Almost surely, 2^{155121552120032} is an apocalyptic number.

It is an amenable number.

155121552120032 is a deficient number, since it is larger than the sum of its proper divisors (150286836322720).

155121552120032 is a wasteful number, since it uses less digits than its factorization.

155121552120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203693762 (or 203693754 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 155121552120032 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, five hundred fifty-two million, one hundred twenty thousand, thirty-two".