15794400451 has 2 divisors, whose sum is σ = 15794400452. Its totient is φ = 15794400450.

The previous prime is 15794400421. The next prime is 15794400467. The reversal of 15794400451 is 15400449751.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15794400451 - 2³³ = 7204465859 is a prime.

It is not a weakly prime, because it can be changed into another prime (15794400421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7897200225 + 7897200226.

It is an arithmetic number, because the mean of its divisors is an integer number (7897200226).

Almost surely, 2^15794400451 is an apocalyptic number.

15794400451 is a deficient number, since it is larger than the sum of its proper divisors (1).

15794400451 is an equidigital number, since it uses as much as digits as its factorization.

15794400451 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 15794400451 in words is "fifteen billion, seven hundred ninety-four million, four hundred thousand, four hundred fifty-one".