20332772061 has 16 divisors (see below), whose sum is σ = 30990150144. Its totient is φ = 11616147504.

The previous prime is 20332772051. The next prime is 20332772099. The reversal of 20332772061 is 16027723302.

It is not a de Polignac number, because 20332772061 - 2¹⁰ = 20332771037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332772051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8511 + ... + 201836.

It is an arithmetic number, because the mean of its divisors is an integer number (1936884384).

Almost surely, 2^20332772061 is an apocalyptic number.

20332772061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20332772061 is a deficient number, since it is larger than the sum of its proper divisors (10657378083).

20332772061 is a wasteful number, since it uses less digits than its factorization.

20332772061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214960.

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 20332772061 in words is "twenty billion, three hundred thirty-two million, seven hundred seventy-two thousand, sixty-one".