22551390139 has 4 divisors (see below), whose sum is σ = 22551777856. Its totient is φ = 22551002424.

The previous prime is 22551390101. The next prime is 22551390193. The reversal of 22551390139 is 93109315522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93109315522 = 2 ⋅46554657761.

It is a cyclic number.

It is not a de Polignac number, because 22551390139 - 2²³ = 22543001531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22551390839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86964 + ... + 229489.

It is an arithmetic number, because the mean of its divisors is an integer number (5637944464).

Almost surely, 2^22551390139 is an apocalyptic number.

22551390139 is a deficient number, since it is larger than the sum of its proper divisors (387717).

22551390139 is an equidigital number, since it uses as much as digits as its factorization.

22551390139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387716.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 22551390139 in words is "twenty-two billion, five hundred fifty-one million, three hundred ninety thousand, one hundred thirty-nine".