20936037765 has 8 divisors (see below), whose sum is σ = 33497660448. Its totient is φ = 11165886800.

The previous prime is 20936037743. The next prime is 20936037779. The reversal of 20936037765 is 56773063902.

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

It is not a de Polignac number, because 20936037765 - 2²² = 20931843461 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 697867911 + ... + 697867940.

It is an arithmetic number, because the mean of its divisors is an integer number (4187207556).

Almost surely, 2^20936037765 is an apocalyptic number.

It is an amenable number.

20936037765 is a deficient number, since it is larger than the sum of its proper divisors (12561622683).

20936037765 is a wasteful number, since it uses less digits than its factorization.

20936037765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395735859.

The product of its (nonzero) digits is 1428840, while the sum is 48.

The spelling of 20936037765 in words is "twenty billion, nine hundred thirty-six million, thirty-seven thousand, seven hundred sixty-five".