155613773796 has 144 divisors (see below), whose sum is σ = 418285766976. Its totient is φ = 44733249792.

The previous prime is 155613773747. The next prime is 155613773831. The reversal of 155613773796 is 697377316551.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3526606 + ... + 3570458.

Almost surely, 2^155613773796 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 155613773796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209142883488).

155613773796 is an abundant number, since it is smaller than the sum of its proper divisors (262671993180).

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

155613773796 is a wasteful number, since it uses less digits than its factorization.

155613773796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43962 (or 43937 counting only the distinct ones).

The product of its digits is 25004700, while the sum is 60.

The spelling of 155613773796 in words is "one hundred fifty-five billion, six hundred thirteen million, seven hundred seventy-three thousand, seven hundred ninety-six".