20764356711 has 16 divisors (see below), whose sum is σ = 31643495424. Its totient is φ = 11864382624.

The previous prime is 20764356709. The next prime is 20764356749. The reversal of 20764356711 is 11765346702.

It is a happy number.

It is not a de Polignac number, because 20764356711 - 2¹ = 20764356709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20764356611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 286050 + ... + 351216.

It is an arithmetic number, because the mean of its divisors is an integer number (1977718464).

Almost surely, 2^20764356711 is an apocalyptic number.

20764356711 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20764356711 is a deficient number, since it is larger than the sum of its proper divisors (10879138713).

20764356711 is a wasteful number, since it uses less digits than its factorization.

20764356711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80350.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 20764356711 in words is "twenty billion, seven hundred sixty-four million, three hundred fifty-six thousand, seven hundred eleven".