55621364402401 has 16 divisors (see below), whose sum is σ = 66185198126208. Its totient is φ = 45750136924800.

The previous prime is 55621364402363. The next prime is 55621364402419. The reversal of 55621364402401 is 10420446312655.

55621364402401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-55621364402401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55621364403401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1588528915 + ... + 1588563928.

It is an arithmetic number, because the mean of its divisors is an integer number (4136574882888).

Almost surely, 2^{55621364402401} is an apocalyptic number.

It is an amenable number.

55621364402401 is a deficient number, since it is larger than the sum of its proper divisors (10563833723807).

55621364402401 is a wasteful number, since it uses less digits than its factorization.

55621364402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177092952.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 55621364402401 in words is "fifty-five trillion, six hundred twenty-one billion, three hundred sixty-four million, four hundred two thousand, four hundred one".