155604791138 has 8 divisors (see below), whose sum is σ = 233948736000. Its totient is φ = 77621879140.

The previous prime is 155604791129. The next prime is 155604791149. The reversal of 155604791138 is 831197406551.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 90257138 + ... + 90258861.

It is an arithmetic number, because the mean of its divisors is an integer number (29243592000).

Almost surely, 2^155604791138 is an apocalyptic number.

155604791138 is a deficient number, since it is larger than the sum of its proper divisors (78343944862).

155604791138 is a wasteful number, since it uses less digits than its factorization.

155604791138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180516432.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 155604791138 in words is "one hundred fifty-five billion, six hundred four million, seven hundred ninety-one thousand, one hundred thirty-eight".