56326109491 has 2 divisors, whose sum is σ = 56326109492. Its totient is φ = 56326109490.

The previous prime is 56326109479. The next prime is 56326109533. The reversal of 56326109491 is 19490162365.

56326109491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56326109491 - 2⁵ = 56326109459 is a prime.

It is a super-2 number, since 2×56326109491² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56326109461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28163054745 + 28163054746.

It is an arithmetic number, because the mean of its divisors is an integer number (28163054746).

Almost surely, 2^56326109491 is an apocalyptic number.

56326109491 is a deficient number, since it is larger than the sum of its proper divisors (1).

56326109491 is an equidigital number, since it uses as much as digits as its factorization.

56326109491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 56326109491 in words is "fifty-six billion, three hundred twenty-six million, one hundred nine thousand, four hundred ninety-one".