20677712726 has 32 divisors (see below), whose sum is σ = 34444006272. Its totient is φ = 9230981760.

The previous prime is 20677712707. The next prime is 20677712743. The reversal of 20677712726 is 62721777602.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 475925 + ... + 517551.

It is an arithmetic number, because the mean of its divisors is an integer number (1076375196).

Almost surely, 2^20677712726 is an apocalyptic number.

20677712726 is a deficient number, since it is larger than the sum of its proper divisors (13766293546).

20677712726 is a wasteful number, since it uses less digits than its factorization.

20677712726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42044.

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 20677712726 in words is "twenty billion, six hundred seventy-seven million, seven hundred twelve thousand, seven hundred twenty-six".