155379393838 has 16 divisors (see below), whose sum is σ = 235558748160. Its totient is φ = 76863220056.

The previous prime is 155379393823. The next prime is 155379393847. The reversal of 155379393838 is 838393973551.

It is a self number, because there is not a number n which added to its sum of digits gives 155379393838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760806 + ... + 943177.

It is an arithmetic number, because the mean of its divisors is an integer number (14722421760).

Almost surely, 2^155379393838 is an apocalyptic number.

155379393838 is a deficient number, since it is larger than the sum of its proper divisors (80179354322).

155379393838 is a wasteful number, since it uses less digits than its factorization.

155379393838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704471.

The product of its digits is 73483200, while the sum is 64.

The spelling of 155379393838 in words is "one hundred fifty-five billion, three hundred seventy-nine million, three hundred ninety-three thousand, eight hundred thirty-eight".