53696749640 has 32 divisors (see below), whose sum is σ = 121016782080. Its totient is φ = 21443305152.

The previous prime is 53696749609. The next prime is 53696749651. The reversal of 53696749640 is 4694769635.

It is a self number, because there is not a number n which added to its sum of digits gives 53696749640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081502 + ... + 1130061.

It is an arithmetic number, because the mean of its divisors is an integer number (3781774440).

Almost surely, 2^53696749640 is an apocalyptic number.

It is an amenable number.

53696749640 is an abundant number, since it is smaller than the sum of its proper divisors (67320032440).

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

53696749640 is a wasteful number, since it uses less digits than its factorization.

53696749640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212181 (or 2212177 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 59.

The spelling of 53696749640 in words is "fifty-three billion, six hundred ninety-six million, seven hundred forty-nine thousand, six hundred forty".