15421022051 has 2 divisors, whose sum is σ = 15421022052. Its totient is φ = 15421022050.

The previous prime is 15421021981. The next prime is 15421022119. The reversal of 15421022051 is 15022012451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15421022051 is a prime.

It is not a weakly prime, because it can be changed into another prime (15421012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710511025 + 7710511026.

It is an arithmetic number, because the mean of its divisors is an integer number (7710511026).

Almost surely, 2^15421022051 is an apocalyptic number.

15421022051 is a deficient number, since it is larger than the sum of its proper divisors (1).

15421022051 is an equidigital number, since it uses as much as digits as its factorization.

15421022051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 15421022051 in words is "fifteen billion, four hundred twenty-one million, twenty-two thousand, fifty-one".