55351931376 has 160 divisors (see below), whose sum is σ = 172183265280. Its totient is φ = 14980154112.

The previous prime is 55351931351. The next prime is 55351931447. The reversal of 55351931376 is 67313915355.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 761215 + ... + 830753.

It is an arithmetic number, because the mean of its divisors is an integer number (1076145408).

Almost surely, 2^55351931376 is an apocalyptic number.

55351931376 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55351931376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86091632640).

55351931376 is an abundant number, since it is smaller than the sum of its proper divisors (116831333904).

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

55351931376 is a wasteful number, since it uses less digits than its factorization.

55351931376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69683 (or 69677 counting only the distinct ones).

The product of its digits is 1275750, while the sum is 48.

The spelling of 55351931376 in words is "fifty-five billion, three hundred fifty-one million, nine hundred thirty-one thousand, three hundred seventy-six".