56454438851 has 2 divisors, whose sum is σ = 56454438852. Its totient is φ = 56454438850.

The previous prime is 56454438847. The next prime is 56454438863. The reversal of 56454438851 is 15883445465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56454438851 - 2² = 56454438847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56454438793 and 56454438802.

It is not a weakly prime, because it can be changed into another prime (56454438871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28227219425 + 28227219426.

It is an arithmetic number, because the mean of its divisors is an integer number (28227219426).

Almost surely, 2^56454438851 is an apocalyptic number.

56454438851 is a deficient number, since it is larger than the sum of its proper divisors (1).

56454438851 is an equidigital number, since it uses as much as digits as its factorization.

56454438851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216000, while the sum is 53.

The spelling of 56454438851 in words is "fifty-six billion, four hundred fifty-four million, four hundred thirty-eight thousand, eight hundred fifty-one".