55372005312644 has 24 divisors (see below), whose sum is σ = 97309547899200. Its totient is φ = 27569497373600.

The previous prime is 55372005312563. The next prime is 55372005312647. The reversal of 55372005312644 is 44621350027355.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55372005312647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26496854 + ... + 28510125.

It is an arithmetic number, because the mean of its divisors is an integer number (4054564495800).

Almost surely, 2^{55372005312644} is an apocalyptic number.

It is an amenable number.

55372005312644 is a deficient number, since it is larger than the sum of its proper divisors (41937542586556).

55372005312644 is a wasteful number, since it uses less digits than its factorization.

55372005312644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55008043 (or 55008041 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 47.

Adding to 55372005312644 its reverse (44621350027355), we get a palindrome (99993355339999).

The spelling of 55372005312644 in words is "fifty-five trillion, three hundred seventy-two billion, five million, three hundred twelve thousand, six hundred forty-four".