20251126454639 has 2 divisors, whose sum is σ = 20251126454640. Its totient is φ = 20251126454638.

The previous prime is 20251126454623. The next prime is 20251126454681. The reversal of 20251126454639 is 93645462115202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20251126454639 - 2⁴ = 20251126454623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20251126451639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10125563227319 + 10125563227320.

It is an arithmetic number, because the mean of its divisors is an integer number (10125563227320).

Almost surely, 2^{20251126454639} is an apocalyptic number.

20251126454639 is a deficient number, since it is larger than the sum of its proper divisors (1).

20251126454639 is an equidigital number, since it uses as much as digits as its factorization.

20251126454639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 20251126454639 in words is "twenty trillion, two hundred fifty-one billion, one hundred twenty-six million, four hundred fifty-four thousand, six hundred thirty-nine".