20372661067 has 4 divisors (see below), whose sum is σ = 22224721176. Its totient is φ = 18520600960.

The previous prime is 20372661053. The next prime is 20372661083. The reversal of 20372661067 is 76016627302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20372661067 - 2⁷ = 20372660939 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20372661047) 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, 926030038 + ... + 926030059.

It is an arithmetic number, because the mean of its divisors is an integer number (5556180294).

Almost surely, 2^20372661067 is an apocalyptic number.

20372661067 is a deficient number, since it is larger than the sum of its proper divisors (1852060109).

20372661067 is a wasteful number, since it uses less digits than its factorization.

20372661067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852060108.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 20372661067 in words is "twenty billion, three hundred seventy-two million, six hundred sixty-one thousand, sixty-seven".