56780899451 has 2 divisors, whose sum is σ = 56780899452. Its totient is φ = 56780899450.

The previous prime is 56780899403. The next prime is 56780899523. The reversal of 56780899451 is 15499808765.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56780899451 is a prime.

It is not a weakly prime, because it can be changed into another prime (56780899151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28390449725 + 28390449726.

It is an arithmetic number, because the mean of its divisors is an integer number (28390449726).

Almost surely, 2^56780899451 is an apocalyptic number.

56780899451 is a deficient number, since it is larger than the sum of its proper divisors (1).

56780899451 is an equidigital number, since it uses as much as digits as its factorization.

56780899451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 56780899451 in words is "fifty-six billion, seven hundred eighty million, eight hundred ninety-nine thousand, four hundred fifty-one".