20801823080756 has 24 divisors (see below), whose sum is σ = 39640497708000. Its totient is φ = 9513719447904.

The previous prime is 20801823080743. The next prime is 20801823080791. The reversal of 20801823080756 is 65708032810802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4719104666 + ... + 4719109073.

It is an arithmetic number, because the mean of its divisors is an integer number (1651687404500).

Almost surely, 2^{20801823080756} is an apocalyptic number.

It is an amenable number.

20801823080756 is a deficient number, since it is larger than the sum of its proper divisors (18838674627244).

20801823080756 is a wasteful number, since it uses less digits than its factorization.

20801823080756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9438213791 (or 9438213789 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 20801823080756 in words is "twenty trillion, eight hundred one billion, eight hundred twenty-three million, eighty thousand, seven hundred fifty-six".