20632120654 has 4 divisors (see below), whose sum is σ = 30948180984. Its totient is φ = 10316060326.

The previous prime is 20632120651. The next prime is 20632120657. The reversal of 20632120654 is 45602123602.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20632120651) and next prime (20632120657).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 5158030162 + ... + 5158030165.

It is an arithmetic number, because the mean of its divisors is an integer number (7737045246).

Almost surely, 2^20632120654 is an apocalyptic number.

20632120654 is a deficient number, since it is larger than the sum of its proper divisors (10316060330).

20632120654 is a wasteful number, since it uses less digits than its factorization.

20632120654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316060329.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20632120654 in words is "twenty billion, six hundred thirty-two million, one hundred twenty thousand, six hundred fifty-four".