55191919760 has 40 divisors (see below), whose sum is σ = 128708952576. Its totient is φ = 22010060160.

The previous prime is 55191919747. The next prime is 55191919771. The reversal of 55191919760 is 6791919155.

55191919760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×55191919760² (a number of 22 digits) contains 22 as substring.

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, 1015664 + ... + 1068623.

Almost surely, 2^55191919760 is an apocalyptic number.

It is an amenable number.

55191919760 is an abundant number, since it is smaller than the sum of its proper divisors (73517032816).

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

55191919760 is a wasteful number, since it uses less digits than its factorization.

55191919760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084631 (or 2084625 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 53.

The spelling of 55191919760 in words is "fifty-five billion, one hundred ninety-one million, nine hundred nineteen thousand, seven hundred sixty".