20377216667 has 8 divisors (see below), whose sum is σ = 20447999520. Its totient is φ = 20306468160.

The previous prime is 20377216649. The next prime is 20377216679. The reversal of 20377216667 is 76661277302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20377216667 - 2¹⁸ = 20376954523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20377216687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1883309 + ... + 1894097.

It is an arithmetic number, because the mean of its divisors is an integer number (2555999940).

Almost surely, 2^20377216667 is an apocalyptic number.

20377216667 is a deficient number, since it is larger than the sum of its proper divisors (70782853).

20377216667 is a wasteful number, since it uses less digits than its factorization.

20377216667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17173.

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 20377216667 in words is "twenty billion, three hundred seventy-seven million, two hundred sixteen thousand, six hundred sixty-seven".