34186921972 has 12 divisors (see below), whose sum is σ = 68373844000. Its totient is φ = 14651537976.

The previous prime is 34186921963. The next prime is 34186921973. The reversal of 34186921972 is 27912968143.

34186921972 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34186921973) 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, 610480722 + ... + 610480777.

Almost surely, 2^34186921972 is an apocalyptic number.

It is an amenable number.

34186921972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

34186921972 is a wasteful number, since it uses less digits than its factorization.

34186921972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220961510 (or 1220961508 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The spelling of 34186921972 in words is "thirty-four billion, one hundred eighty-six million, nine hundred twenty-one thousand, nine hundred seventy-two".