155038191539 has 32 divisors (see below), whose sum is σ = 196095292416. Its totient is φ = 119060997120.

The previous prime is 155038191533. The next prime is 155038191593. The reversal of 155038191539 is 935191830551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155038191539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155038191533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7673819 + ... + 7693995.

It is an arithmetic number, because the mean of its divisors is an integer number (6127977888).

Almost surely, 2^155038191539 is an apocalyptic number.

155038191539 is a deficient number, since it is larger than the sum of its proper divisors (41057100877).

155038191539 is a wasteful number, since it uses less digits than its factorization.

155038191539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21635.

The product of its (nonzero) digits is 729000, while the sum is 50.

The spelling of 155038191539 in words is "one hundred fifty-five billion, thirty-eight million, one hundred ninety-one thousand, five hundred thirty-nine".