2172429974886 has 16 divisors (see below), whose sum is σ = 4372534218864. Its totient is φ = 719530946784.

The previous prime is 2172429974879. The next prime is 2172429974893. The reversal of 2172429974886 is 6884799242712.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2172429974879) and next prime (2172429974893).

It is a self number, because there is not a number n which added to its sum of digits gives 2172429974886.

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, 1153093525 + ... + 1153095408.

It is an arithmetic number, because the mean of its divisors is an integer number (273283388679).

Almost surely, 2^{2172429974886} is an apocalyptic number.

2172429974886 is an abundant number, since it is smaller than the sum of its proper divisors (2200104243978).

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

2172429974886 is a wasteful number, since it uses less digits than its factorization.

2172429974886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306189095.

The product of its digits is 195084288, while the sum is 69.

The spelling of 2172429974886 in words is "two trillion, one hundred seventy-two billion, four hundred twenty-nine million, nine hundred seventy-four thousand, eight hundred eighty-six".