12722176542 has 16 divisors (see below), whose sum is σ = 26941079952. Its totient is φ = 3991271040.

The previous prime is 12722176517. The next prime is 12722176567. The reversal of 12722176542 is 24567122721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12722176517) and next prime (12722176567).

It is a self number, because there is not a number n which added to its sum of digits gives 12722176542.

It is a congruent number.

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, 62363509 + ... + 62363712.

It is an arithmetic number, because the mean of its divisors is an integer number (1683817497).

Almost surely, 2^12722176542 is an apocalyptic number.

12722176542 is an abundant number, since it is smaller than the sum of its proper divisors (14218903410).

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

12722176542 is a wasteful number, since it uses less digits than its factorization.

12722176542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124727243.

The product of its digits is 94080, while the sum is 39.

The spelling of 12722176542 in words is "twelve billion, seven hundred twenty-two million, one hundred seventy-six thousand, five hundred forty-two".