155000005957 has 2 divisors, whose sum is σ = 155000005958. Its totient is φ = 155000005956.

The previous prime is 155000005903. The next prime is 155000005973. The reversal of 155000005957 is 759500000551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153075780001 + 1924225956 = 391249^2 + 43866^2 .

It is an emirp because it is prime and its reverse (759500000551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155000005957 - 2²⁷ = 154865788229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155000003957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77500002978 + 77500002979.

It is an arithmetic number, because the mean of its divisors is an integer number (77500002979).

Almost surely, 2^155000005957 is an apocalyptic number.

It is an amenable number.

155000005957 is a deficient number, since it is larger than the sum of its proper divisors (1).

155000005957 is an equidigital number, since it uses as much as digits as its factorization.

155000005957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 37.

The spelling of 155000005957 in words is "one hundred fifty-five billion, five thousand, nine hundred fifty-seven".