15477494057 has 2 divisors, whose sum is σ = 15477494058. Its totient is φ = 15477494056.

The previous prime is 15477493987. The next prime is 15477494083. The reversal of 15477494057 is 75049477451.

15477494057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12695880976 + 2781613081 = 112676^2 + 52741^2 .

It is a cyclic number.

It is not a de Polignac number, because 15477494057 - 2²² = 15473299753 is a prime.

It is not a weakly prime, because it can be changed into another prime (15477494257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7738747028 + 7738747029.

It is an arithmetic number, because the mean of its divisors is an integer number (7738747029).

Almost surely, 2^15477494057 is an apocalyptic number.

It is an amenable number.

15477494057 is a deficient number, since it is larger than the sum of its proper divisors (1).

15477494057 is an equidigital number, since it uses as much as digits as its factorization.

15477494057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4939200, while the sum is 53.

The spelling of 15477494057 in words is "fifteen billion, four hundred seventy-seven million, four hundred ninety-four thousand, fifty-seven".