55615400001 has 24 divisors (see below), whose sum is σ = 93762948864. Its totient is φ = 31104051840.

The previous prime is 55615399933. The next prime is 55615400021. The reversal of 55615400001 is 10000451655.

It is a happy number.

55615400001 is a `hidden beast` number, since 5 + 5 + 615 + 40 + 0 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 55615400001 - 2¹⁵ = 55615367233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55615400021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9388360 + ... + 9394281.

It is an arithmetic number, because the mean of its divisors is an integer number (3906789536).

Almost surely, 2^55615400001 is an apocalyptic number.

It is an amenable number.

55615400001 is a deficient number, since it is larger than the sum of its proper divisors (38147548863).

55615400001 is a wasteful number, since it uses less digits than its factorization.

55615400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18782701 (or 18782698 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 55615400001 its reverse (10000451655), we get a palindrome (65615851656).

The spelling of 55615400001 in words is "fifty-five billion, six hundred fifteen million, four hundred thousand, one".