15201442957 has 2 divisors, whose sum is σ = 15201442958. Its totient is φ = 15201442956.

The previous prime is 15201442913. The next prime is 15201443009. The reversal of 15201442957 is 75924410251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13718499876 + 1482943081 = 117126^2 + 38509^2 .

It is a cyclic number.

It is not a de Polignac number, because 15201442957 - 2¹¹ = 15201440909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15201442057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7600721478 + 7600721479.

It is an arithmetic number, because the mean of its divisors is an integer number (7600721479).

Almost surely, 2^15201442957 is an apocalyptic number.

It is an amenable number.

15201442957 is a deficient number, since it is larger than the sum of its proper divisors (1).

15201442957 is an equidigital number, since it uses as much as digits as its factorization.

15201442957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 15201442957 in words is "fifteen billion, two hundred one million, four hundred forty-two thousand, nine hundred fifty-seven".