20867261372 has 12 divisors (see below), whose sum is σ = 37116358776. Its totient is φ = 10262587440.

The previous prime is 20867261357. The next prime is 20867261381. The reversal of 20867261372 is 27316276802.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42760538 + ... + 42761025.

It is an arithmetic number, because the mean of its divisors is an integer number (3093029898).

Almost surely, 2^20867261372 is an apocalyptic number.

It is an amenable number.

20867261372 is a deficient number, since it is larger than the sum of its proper divisors (16249097404).

20867261372 is a wasteful number, since it uses less digits than its factorization.

20867261372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85521628 (or 85521626 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 20867261372 in words is "twenty billion, eight hundred sixty-seven million, two hundred sixty-one thousand, three hundred seventy-two".