55722166012 has 6 divisors (see below), whose sum is σ = 97513790528. Its totient is φ = 27861083004.

The previous prime is 55722165949. The next prime is 55722166057. The reversal of 55722166012 is 21066122755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965270748 + ... + 6965270755.

Almost surely, 2^55722166012 is an apocalyptic number.

It is an amenable number.

55722166012 is a deficient number, since it is larger than the sum of its proper divisors (41791624516).

55722166012 is a wasteful number, since it uses less digits than its factorization.

55722166012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930541507 (or 13930541505 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 55722166012 its reverse (21066122755), we get a palindrome (76788288767).

The spelling of 55722166012 in words is "fifty-five billion, seven hundred twenty-two million, one hundred sixty-six thousand, twelve".