56101109761 has 2 divisors, whose sum is σ = 56101109762. Its totient is φ = 56101109760.

The previous prime is 56101109749. The next prime is 56101109767. The reversal of 56101109761 is 16790110165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52329307536 + 3771802225 = 228756^2 + 61415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56101109761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56101109761.

It is not a weakly prime, because it can be changed into another prime (56101109767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28050554880 + 28050554881.

It is an arithmetic number, because the mean of its divisors is an integer number (28050554881).

Almost surely, 2^56101109761 is an apocalyptic number.

It is an amenable number.

56101109761 is a deficient number, since it is larger than the sum of its proper divisors (1).

56101109761 is an equidigital number, since it uses as much as digits as its factorization.

56101109761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 37.

The spelling of 56101109761 in words is "fifty-six billion, one hundred one million, one hundred nine thousand, seven hundred sixty-one".