20120573663 has 2 divisors, whose sum is σ = 20120573664. Its totient is φ = 20120573662.

The previous prime is 20120573647. The next prime is 20120573677. The reversal of 20120573663 is 36637502102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120573663 - 2⁴ = 20120573647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120573633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060286831 + 10060286832.

It is an arithmetic number, because the mean of its divisors is an integer number (10060286832).

Almost surely, 2^20120573663 is an apocalyptic number.

20120573663 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120573663 is an equidigital number, since it uses as much as digits as its factorization.

20120573663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 20120573663 in words is "twenty billion, one hundred twenty million, five hundred seventy-three thousand, six hundred sixty-three".