55401127902 has 80 divisors (see below), whose sum is σ = 129066415632. Its totient is φ = 17747579520.

The previous prime is 55401127879. The next prime is 55401127933. The reversal of 55401127902 is 20972110455.

55401127902 is a `hidden beast` number, since 5 + 540 + 1 + 1 + 27 + 90 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 382768 + ... + 507260.

Almost surely, 2^55401127902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55401127902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64533207816).

55401127902 is an abundant number, since it is smaller than the sum of its proper divisors (73665287730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55401127902 is a wasteful number, since it uses less digits than its factorization.

55401127902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124615 (or 124606 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 55401127902 in words is "fifty-five billion, four hundred one million, one hundred twenty-seven thousand, nine hundred two".