15061144957 has 2 divisors, whose sum is σ = 15061144958. Its totient is φ = 15061144956.

The previous prime is 15061144939. The next prime is 15061145081. The reversal of 15061144957 is 75944116051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14497604836 + 563540121 = 120406^2 + 23739^2 .

It is a cyclic number.

It is not a de Polignac number, because 15061144957 - 2²³ = 15052756349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15061144157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7530572478 + 7530572479.

It is an arithmetic number, because the mean of its divisors is an integer number (7530572479).

Almost surely, 2^15061144957 is an apocalyptic number.

It is an amenable number.

15061144957 is a deficient number, since it is larger than the sum of its proper divisors (1).

15061144957 is an equidigital number, since it uses as much as digits as its factorization.

15061144957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 15061144957 in words is "fifteen billion, sixty-one million, one hundred forty-four thousand, nine hundred fifty-seven".