56439984335387 has 2 divisors, whose sum is σ = 56439984335388. Its totient is φ = 56439984335386.

The previous prime is 56439984335297. The next prime is 56439984335429. The reversal of 56439984335387 is 78353348993465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56439984335387 - 2¹⁸ = 56439984073243 is a prime.

It is not a weakly prime, because it can be changed into another prime (56439984332387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28219992167693 + 28219992167694.

It is an arithmetic number, because the mean of its divisors is an integer number (28219992167694).

Almost surely, 2^{56439984335387} is an apocalyptic number.

56439984335387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56439984335387 is an equidigital number, since it uses as much as digits as its factorization.

56439984335387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7054387200, while the sum is 77.

The spelling of 56439984335387 in words is "fifty-six trillion, four hundred thirty-nine billion, nine hundred eighty-four million, three hundred thirty-five thousand, three hundred eighty-seven".