55376391663 has 16 divisors (see below), whose sum is σ = 84868034400. Its totient is φ = 35644573440.

The previous prime is 55376391649. The next prime is 55376391683. The reversal of 55376391663 is 36619367355.

55376391663 is a `hidden beast` number, since 5 + 537 + 6 + 39 + 16 + 63 = 666.

It is not a de Polignac number, because 55376391663 - 2⁸ = 55376391407 is a prime.

It is a super-2 number, since 2×55376391663² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55376391643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35360898 + ... + 35362463.

It is an arithmetic number, because the mean of its divisors is an integer number (5304252150).

Almost surely, 2^55376391663 is an apocalyptic number.

55376391663 is a deficient number, since it is larger than the sum of its proper divisors (29491642737).

55376391663 is a wasteful number, since it uses less digits than its factorization.

55376391663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70723399 (or 70723393 counting only the distinct ones).

The product of its digits is 9185400, while the sum is 54.

The spelling of 55376391663 in words is "fifty-five billion, three hundred seventy-six million, three hundred ninety-one thousand, six hundred sixty-three".