20294554123 has 2 divisors, whose sum is σ = 20294554124. Its totient is φ = 20294554122.

The previous prime is 20294554097. The next prime is 20294554127. The reversal of 20294554123 is 32145549202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20294554123 is a prime.

It is not a weakly prime, because it can be changed into another prime (20294554127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10147277061 + 10147277062.

It is an arithmetic number, because the mean of its divisors is an integer number (10147277062).

Almost surely, 2^20294554123 is an apocalyptic number.

20294554123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20294554123 is an equidigital number, since it uses as much as digits as its factorization.

20294554123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20294554123 in words is "twenty billion, two hundred ninety-four million, five hundred fifty-four thousand, one hundred twenty-three".