20672262765 has 96 divisors (see below), whose sum is σ = 45431193600. Its totient is φ = 8445375360.

The previous prime is 20672262761. The next prime is 20672262811. The reversal of 20672262765 is 56726227602.

It is not a de Polignac number, because 20672262765 - 2² = 20672262761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20672262765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20672262761) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 153876 + ... + 254994.

It is an arithmetic number, because the mean of its divisors is an integer number (473241600).

Almost surely, 2^20672262765 is an apocalyptic number.

It is an amenable number.

20672262765 is an abundant number, since it is smaller than the sum of its proper divisors (24758930835).

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

20672262765 is a wasteful number, since it uses less digits than its factorization.

20672262765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101207 (or 101204 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 20672262765 in words is "twenty billion, six hundred seventy-two million, two hundred sixty-two thousand, seven hundred sixty-five".