55730366772 has 12 divisors (see below), whose sum is σ = 130037522496. Its totient is φ = 18576788920.

The previous prime is 55730366737. The next prime is 55730366779. The reversal of 55730366772 is 27766303755.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55730366779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322098604 + ... + 2322098627.

It is an arithmetic number, because the mean of its divisors is an integer number (10836460208).

Almost surely, 2^55730366772 is an apocalyptic number.

It is an amenable number.

55730366772 is an abundant number, since it is smaller than the sum of its proper divisors (74307155724).

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

55730366772 is a wasteful number, since it uses less digits than its factorization.

55730366772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644197238 (or 4644197236 counting only the distinct ones).

The product of its (nonzero) digits is 5556600, while the sum is 51.

The spelling of 55730366772 in words is "fifty-five billion, seven hundred thirty million, three hundred sixty-six thousand, seven hundred seventy-two".