56642399480 has 32 divisors (see below), whose sum is σ = 134153053200. Its totient is φ = 21464487936.

The previous prime is 56642399479. The next prime is 56642399497. The reversal of 56642399480 is 8499324665.

It is a happy number.

It is a super-2 number, since 2×56642399480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37263977 + ... + 37265496.

Almost surely, 2^56642399480 is an apocalyptic number.

It is an amenable number.

56642399480 is an abundant number, since it is smaller than the sum of its proper divisors (77510653720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56642399480 is a wasteful number, since it uses less digits than its factorization.

56642399480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74529503 (or 74529499 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 56642399480 in words is "fifty-six billion, six hundred forty-two million, three hundred ninety-nine thousand, four hundred eighty".