56006049991 has 2 divisors, whose sum is σ = 56006049992. Its totient is φ = 56006049990.

The previous prime is 56006049917. The next prime is 56006050031. The reversal of 56006049991 is 19994060065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56006049991 - 2²³ = 55997661383 is a prime.

It is a super-2 number, since 2×56006049991² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56006049791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28003024995 + 28003024996.

It is an arithmetic number, because the mean of its divisors is an integer number (28003024996).

Almost surely, 2^56006049991 is an apocalyptic number.

56006049991 is a deficient number, since it is larger than the sum of its proper divisors (1).

56006049991 is an equidigital number, since it uses as much as digits as its factorization.

56006049991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 56006049991 in words is "fifty-six billion, six million, forty-nine thousand, nine hundred ninety-one".