55537678464 has 64 divisors (see below), whose sum is σ = 148648214880. Its totient is φ = 18371225600.

The previous prime is 55537678459. The next prime is 55537678477. The reversal of 55537678464 is 46487673555.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 55537678398 and 55537678407.

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, 501717 + ... + 602324.

Almost surely, 2^55537678464 is an apocalyptic number.

It is an amenable number.

55537678464 is an abundant number, since it is smaller than the sum of its proper divisors (93110536416).

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

55537678464 is a wasteful number, since it uses less digits than its factorization.

55537678464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104189 (or 1104177 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 60.

The spelling of 55537678464 in words is "fifty-five billion, five hundred thirty-seven million, six hundred seventy-eight thousand, four hundred sixty-four".