155523601073 has 4 divisors (see below), whose sum is σ = 156553558848. Its totient is φ = 154493643300.

The previous prime is 155523601063. The next prime is 155523601087. The reversal of 155523601073 is 370106325551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155523601073 - 2²² = 155519406769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155523601003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514978661 + ... + 514978962.

It is an arithmetic number, because the mean of its divisors is an integer number (39138389712).

Almost surely, 2^155523601073 is an apocalyptic number.

It is an amenable number.

155523601073 is a deficient number, since it is larger than the sum of its proper divisors (1029957775).

155523601073 is a wasteful number, since it uses less digits than its factorization.

155523601073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029957774.

The product of its (nonzero) digits is 94500, while the sum is 38.

The spelling of 155523601073 in words is "one hundred fifty-five billion, five hundred twenty-three million, six hundred one thousand, seventy-three".