15442865057 has 2 divisors, whose sum is σ = 15442865058. Its totient is φ = 15442865056.

The previous prime is 15442865003. The next prime is 15442865069. The reversal of 15442865057 is 75056824451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14342218081 + 1100646976 = 119759^2 + 33176^2 .

It is a cyclic number.

It is not a de Polignac number, because 15442865057 - 2¹⁶ = 15442799521 is a prime.

It is a super-2 number, since 2×15442865057² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15442865077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7721432528 + 7721432529.

It is an arithmetic number, because the mean of its divisors is an integer number (7721432529).

Almost surely, 2^15442865057 is an apocalyptic number.

It is an amenable number.

15442865057 is a deficient number, since it is larger than the sum of its proper divisors (1).

15442865057 is an equidigital number, since it uses as much as digits as its factorization.

15442865057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 15442865057 in words is "fifteen billion, four hundred forty-two million, eight hundred sixty-five thousand, fifty-seven".