56120403511 has 2 divisors, whose sum is σ = 56120403512. Its totient is φ = 56120403510.

The previous prime is 56120403499. The next prime is 56120403527. The reversal of 56120403511 is 11530402165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56120403511 - 2³³ = 47530468919 is a prime.

It is a super-2 number, since 2×56120403511² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56120403511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56120403551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28060201755 + 28060201756.

It is an arithmetic number, because the mean of its divisors is an integer number (28060201756).

Almost surely, 2^56120403511 is an apocalyptic number.

56120403511 is a deficient number, since it is larger than the sum of its proper divisors (1).

56120403511 is an equidigital number, since it uses as much as digits as its factorization.

56120403511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 56120403511 its reverse (11530402165), we get a palindrome (67650805676).

The spelling of 56120403511 in words is "fifty-six billion, one hundred twenty million, four hundred three thousand, five hundred eleven".