20632120653 has 16 divisors (see below), whose sum is σ = 29238510080. Its totient is φ = 12904296624.

The previous prime is 20632120651. The next prime is 20632120657. The reversal of 20632120653 is 35602123602.

It is not a de Polignac number, because 20632120653 - 2¹ = 20632120651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20632120653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632120651) 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, 1751251 + ... + 1762992.

It is an arithmetic number, because the mean of its divisors is an integer number (1827406880).

Almost surely, 2^20632120653 is an apocalyptic number.

It is an amenable number.

20632120653 is a deficient number, since it is larger than the sum of its proper divisors (8606389427).

20632120653 is a wasteful number, since it uses less digits than its factorization.

20632120653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514368.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 20632120653 in words is "twenty billion, six hundred thirty-two million, one hundred twenty thousand, six hundred fifty-three".