56745919653 has 4 divisors (see below), whose sum is σ = 75661226208. Its totient is φ = 37830613100.

The previous prime is 56745919627. The next prime is 56745919687. The reversal of 56745919653 is 35691954765.

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 56745919653 - 2⁸ = 56745919397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56745919613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9457653273 + ... + 9457653278.

It is an arithmetic number, because the mean of its divisors is an integer number (18915306552).

Almost surely, 2^56745919653 is an apocalyptic number.

It is an amenable number.

56745919653 is a deficient number, since it is larger than the sum of its proper divisors (18915306555).

56745919653 is a wasteful number, since it uses less digits than its factorization.

56745919653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18915306554.

The product of its digits is 30618000, while the sum is 60.

The spelling of 56745919653 in words is "fifty-six billion, seven hundred forty-five million, nine hundred nineteen thousand, six hundred fifty-three".