55131126644 has 12 divisors (see below), whose sum is σ = 105250332768. Its totient is φ = 25059603000.

The previous prime is 55131126601. The next prime is 55131126697. The reversal of 55131126644 is 44662113155.

55131126644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55131126644² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55131126598 and 55131126607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626490032 + ... + 626490119.

It is an arithmetic number, because the mean of its divisors is an integer number (8770861064).

Almost surely, 2^55131126644 is an apocalyptic number.

It is an amenable number.

55131126644 is a deficient number, since it is larger than the sum of its proper divisors (50119206124).

55131126644 is a wasteful number, since it uses less digits than its factorization.

55131126644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252980166 (or 1252980164 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

Adding to 55131126644 its reverse (44662113155), we get a palindrome (99793239799).

The spelling of 55131126644 in words is "fifty-five billion, one hundred thirty-one million, one hundred twenty-six thousand, six hundred forty-four".