55376261620 has 24 divisors (see below), whose sum is σ = 120041445888. Its totient is φ = 21435972000.

The previous prime is 55376261599. The next prime is 55376261711. The reversal of 55376261620 is 2616267355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44657656 + ... + 44658895.

It is an arithmetic number, because the mean of its divisors is an integer number (5001726912).

Almost surely, 2^55376261620 is an apocalyptic number.

It is an amenable number.

55376261620 is an abundant number, since it is smaller than the sum of its proper divisors (64665184268).

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

55376261620 is a wasteful number, since it uses less digits than its factorization.

55376261620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89316591 (or 89316589 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 55376261620 in words is "fifty-five billion, three hundred seventy-six million, two hundred sixty-one thousand, six hundred twenty".