15216456379 has 2 divisors, whose sum is σ = 15216456380. Its totient is φ = 15216456378.

The previous prime is 15216456371. The next prime is 15216456389. The reversal of 15216456379 is 97365461251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15216456379 - 2³ = 15216456371 is a prime.

It is a super-4 number, since 4×15216456379⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (15216456371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7608228189 + 7608228190.

It is an arithmetic number, because the mean of its divisors is an integer number (7608228190).

Almost surely, 2^15216456379 is an apocalyptic number.

15216456379 is a deficient number, since it is larger than the sum of its proper divisors (1).

15216456379 is an equidigital number, since it uses as much as digits as its factorization.

15216456379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The spelling of 15216456379 in words is "fifteen billion, two hundred sixteen million, four hundred fifty-six thousand, three hundred seventy-nine".