155004134939 has 2 divisors, whose sum is σ = 155004134940. Its totient is φ = 155004134938.

The previous prime is 155004134933. The next prime is 155004134963. The reversal of 155004134939 is 939431400551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155004134939 - 2²⁸ = 154735699483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155004134939.

It is not a weakly prime, because it can be changed into another prime (155004134933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77502067469 + 77502067470.

It is an arithmetic number, because the mean of its divisors is an integer number (77502067470).

Almost surely, 2^155004134939 is an apocalyptic number.

155004134939 is a deficient number, since it is larger than the sum of its proper divisors (1).

155004134939 is an equidigital number, since it uses as much as digits as its factorization.

155004134939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 155004134939 in words is "one hundred fifty-five billion, four million, one hundred thirty-four thousand, nine hundred thirty-nine".