56371445761 has 4 divisors (see below), whose sum is σ = 57570838272. Its totient is φ = 55172053252.

The previous prime is 56371445731. The next prime is 56371445777. The reversal of 56371445761 is 16754417365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56371445761 - 2¹³ = 56371437569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56371445701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599696185 + ... + 599696278.

It is an arithmetic number, because the mean of its divisors is an integer number (14392709568).

It is a Proth number, since it is equal to 105 ⋅ 2²⁹ + 1 and 105 < 2²⁹.

Almost surely, 2^56371445761 is an apocalyptic number.

It is an amenable number.

56371445761 is a deficient number, since it is larger than the sum of its proper divisors (1199392511).

56371445761 is a wasteful number, since it uses less digits than its factorization.

56371445761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199392510.

The product of its digits is 2116800, while the sum is 49.

The spelling of 56371445761 in words is "fifty-six billion, three hundred seventy-one million, four hundred forty-five thousand, seven hundred sixty-one".