20786668802 has 16 divisors (see below), whose sum is σ = 32256746424. Its totient is φ = 10039440000.

The previous prime is 20786668801. The next prime is 20786668813. The reversal of 20786668802 is 20886668702.

It can be written as a sum of positive squares in 4 ways, for example, as 19231865041 + 1554803761 = 138679^2 + 39431^2 .

It is not an unprimeable number, because it can be changed into a prime (20786668801) 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, 1246649 + ... + 1263212.

Almost surely, 2^20786668802 is an apocalyptic number.

20786668802 is a deficient number, since it is larger than the sum of its proper divisors (11470077622).

20786668802 is a wasteful number, since it uses less digits than its factorization.

20786668802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510005.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 20786668802 in words is "twenty billion, seven hundred eighty-six million, six hundred sixty-eight thousand, eight hundred two".