56988518351 has 2 divisors, whose sum is σ = 56988518352. Its totient is φ = 56988518350.

The previous prime is 56988518329. The next prime is 56988518423. The reversal of 56988518351 is 15381588965.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56988518351 is a prime.

It is a super-3 number, since 3×56988518351³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56988514351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28494259175 + 28494259176.

It is an arithmetic number, because the mean of its divisors is an integer number (28494259176).

Almost surely, 2^56988518351 is an apocalyptic number.

56988518351 is a deficient number, since it is larger than the sum of its proper divisors (1).

56988518351 is an equidigital number, since it uses as much as digits as its factorization.

56988518351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368000, while the sum is 59.

The spelling of 56988518351 in words is "fifty-six billion, nine hundred eighty-eight million, five hundred eighteen thousand, three hundred fifty-one".