55720212722 has 16 divisors (see below), whose sum is σ = 84871663872. Its totient is φ = 27430088400.

The previous prime is 55720212721. The next prime is 55720212787. The reversal of 55720212722 is 22721202755.

It is not an unprimeable number, because it can be changed into a prime (55720212721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154868 + ... + 368000.

It is an arithmetic number, because the mean of its divisors is an integer number (5304478992).

Almost surely, 2^55720212722 is an apocalyptic number.

55720212722 is a deficient number, since it is larger than the sum of its proper divisors (29151451150).

55720212722 is a wasteful number, since it uses less digits than its factorization.

55720212722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215153.

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 55720212722 in words is "fifty-five billion, seven hundred twenty million, two hundred twelve thousand, seven hundred twenty-two".