55401113511 has 32 divisors (see below), whose sum is σ = 84121329600. Its totient is φ = 36014492160.

The previous prime is 55401113507. The next prime is 55401113513. The reversal of 55401113511 is 11531110455.

55401113511 is a `hidden beast` number, since 5 + 540 + 1 + 113 + 5 + 1 + 1 = 666.

It is not a de Polignac number, because 55401113511 - 2² = 55401113507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55401113513) 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, 2300545 + ... + 2324501.

It is an arithmetic number, because the mean of its divisors is an integer number (2628791550).

Almost surely, 2^55401113511 is an apocalyptic number.

55401113511 is a deficient number, since it is larger than the sum of its proper divisors (28720216089).

55401113511 is a wasteful number, since it uses less digits than its factorization.

55401113511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26096 (or 26090 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

Adding to 55401113511 its reverse (11531110455), we get a palindrome (66932223966).

The spelling of 55401113511 in words is "fifty-five billion, four hundred one million, one hundred thirteen thousand, five hundred eleven".