56155461013 has 2 divisors, whose sum is σ = 56155461014. Its totient is φ = 56155461012.

The previous prime is 56155460993. The next prime is 56155461041. The reversal of 56155461013 is 31016455165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40962926449 + 15192534564 = 202393^2 + 123258^2 .

It is a cyclic number.

It is not a de Polignac number, because 56155461013 - 2²⁹ = 55618590101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56155465013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28077730506 + 28077730507.

It is an arithmetic number, because the mean of its divisors is an integer number (28077730507).

Almost surely, 2^56155461013 is an apocalyptic number.

It is an amenable number.

56155461013 is a deficient number, since it is larger than the sum of its proper divisors (1).

56155461013 is an equidigital number, since it uses as much as digits as its factorization.

56155461013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 56155461013 in words is "fifty-six billion, one hundred fifty-five million, four hundred sixty-one thousand, thirteen".