55211260872 has 16 divisors (see below), whose sum is σ = 138028152240. Its totient is φ = 18403753616.

The previous prime is 55211260831. The next prime is 55211260883. The reversal of 55211260872 is 27806211255.

It is a self number, because there is not a number n which added to its sum of digits gives 55211260872.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150234578 + ... + 1150234625.

It is an arithmetic number, because the mean of its divisors is an integer number (8626759515).

Almost surely, 2^55211260872 is an apocalyptic number.

It is an amenable number.

55211260872 is an abundant number, since it is smaller than the sum of its proper divisors (82816891368).

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

55211260872 is a wasteful number, since it uses less digits than its factorization.

55211260872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300469212 (or 2300469208 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 55211260872 in words is "fifty-five billion, two hundred eleven million, two hundred sixty thousand, eight hundred seventy-two".