20826920061 has 24 divisors (see below), whose sum is σ = 31062819840. Its totient is φ = 13432802400.

The previous prime is 20826920057. The next prime is 20826920071. The reversal of 20826920061 is 16002962802.

It is a happy number.

It is not a de Polignac number, because 20826920061 - 2² = 20826920057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20826919998 and 20826920025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826920041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1180060 + ... + 1197578.

It is an arithmetic number, because the mean of its divisors is an integer number (1294284160).

Almost surely, 2^20826920061 is an apocalyptic number.

It is an amenable number.

20826920061 is a deficient number, since it is larger than the sum of its proper divisors (10235899779).

20826920061 is a wasteful number, since it uses less digits than its factorization.

20826920061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21817 (or 21814 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20826920061 in words is "twenty billion, eight hundred twenty-six million, nine hundred twenty thousand, sixty-one".