55644364276858 has 64 divisors (see below), whose sum is σ = 96259313018880. Its totient is φ = 23630895288000.

The previous prime is 55644364276819. The next prime is 55644364276859. The reversal of 55644364276858 is 85867246344655.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55644364276859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6490648260 + ... + 6490656832.

It is an arithmetic number, because the mean of its divisors is an integer number (1504051765920).

Almost surely, 2^{55644364276858} is an apocalyptic number.

55644364276858 is a deficient number, since it is larger than the sum of its proper divisors (40614948742022).

55644364276858 is a wasteful number, since it uses less digits than its factorization.

55644364276858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13483.

The product of its digits is 4644864000, while the sum is 73.

The spelling of 55644364276858 in words is "fifty-five trillion, six hundred forty-four billion, three hundred sixty-four million, two hundred seventy-six thousand, eight hundred fifty-eight".