20772140762765 has 8 divisors (see below), whose sum is σ = 28487507331840. Its totient is φ = 14243753665872.

The previous prime is 20772140762749. The next prime is 20772140762771. The reversal of 20772140762765 is 56726704127702.

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 20772140762765 - 2⁴ = 20772140762749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20772140762765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296744868005 + ... + 296744868074.

It is an arithmetic number, because the mean of its divisors is an integer number (3560938416480).

Almost surely, 2^{20772140762765} is an apocalyptic number.

It is an amenable number.

20772140762765 is a deficient number, since it is larger than the sum of its proper divisors (7715366569075).

20772140762765 is an equidigital number, since it uses as much as digits as its factorization.

20772140762765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593489736091.

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 20772140762765 in words is "twenty trillion, seven hundred seventy-two billion, one hundred forty million, seven hundred sixty-two thousand, seven hundred sixty-five".