15372947379851 has 2 divisors, whose sum is σ = 15372947379852. Its totient is φ = 15372947379850.

The previous prime is 15372947379781. The next prime is 15372947379871. The reversal of 15372947379851 is 15897374927351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15372947379851 - 2¹⁰ = 15372947378827 is a prime.

It is a super-2 number, since 2×15372947379851² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15372947379871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7686473689925 + 7686473689926.

It is an arithmetic number, because the mean of its divisors is an integer number (7686473689926).

Almost surely, 2^{15372947379851} is an apocalyptic number.

15372947379851 is a deficient number, since it is larger than the sum of its proper divisors (1).

15372947379851 is an equidigital number, since it uses as much as digits as its factorization.

15372947379851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400075200, while the sum is 71.

The spelling of 15372947379851 in words is "fifteen trillion, three hundred seventy-two billion, nine hundred forty-seven million, three hundred seventy-nine thousand, eight hundred fifty-one".