155263065504 has 144 divisors (see below), whose sum is σ = 422965880064. Its totient is φ = 49869903360.

The previous prime is 155263065487. The next prime is 155263065523. The reversal of 155263065504 is 405560362551.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 666364972 + ... + 666365204.

It is an arithmetic number, because the mean of its divisors is an integer number (2937263056).

Almost surely, 2^155263065504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155263065504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211482940032).

155263065504 is an abundant number, since it is smaller than the sum of its proper divisors (267702814560).

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

155263065504 is an frugal number, since it uses more digits than its factorization.

155263065504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 155263065504 in words is "one hundred fifty-five billion, two hundred sixty-three million, sixty-five thousand, five hundred four".