20112776623 has 2 divisors, whose sum is σ = 20112776624. Its totient is φ = 20112776622.

The previous prime is 20112776597. The next prime is 20112776647. The reversal of 20112776623 is 32667721102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112776623 - 2⁹ = 20112776111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112774623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056388311 + 10056388312.

It is an arithmetic number, because the mean of its divisors is an integer number (10056388312).

Almost surely, 2^20112776623 is an apocalyptic number.

20112776623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112776623 is an equidigital number, since it uses as much as digits as its factorization.

20112776623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 20112776623 in words is "twenty billion, one hundred twelve million, seven hundred seventy-six thousand, six hundred twenty-three".