55764656641 has 4 divisors (see below), whose sum is σ = 55787904000. Its totient is φ = 55741409284.

The previous prime is 55764656611. The next prime is 55764656653. The reversal of 55764656641 is 14665646755.

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 55764656641 - 2⁷ = 55764656513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55764656611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11620081 + ... + 11624878.

It is an arithmetic number, because the mean of its divisors is an integer number (13946976000).

Almost surely, 2^55764656641 is an apocalyptic number.

It is an amenable number.

55764656641 is a deficient number, since it is larger than the sum of its proper divisors (23247359).

55764656641 is a wasteful number, since it uses less digits than its factorization.

55764656641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23247358.

The product of its digits is 18144000, while the sum is 55.

The spelling of 55764656641 in words is "fifty-five billion, seven hundred sixty-four million, six hundred fifty-six thousand, six hundred forty-one".