18007126457 has 4 divisors (see below), whose sum is σ = 18588001536. Its totient is φ = 17426251380.

The previous prime is 18007126451. The next prime is 18007126471. The reversal of 18007126457 is 75462170081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18007126457 - 2²⁶ = 17940017593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18007126451) 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, 290437493 + ... + 290437554.

It is an arithmetic number, because the mean of its divisors is an integer number (4647000384).

Almost surely, 2^18007126457 is an apocalyptic number.

It is an amenable number.

18007126457 is a deficient number, since it is larger than the sum of its proper divisors (580875079).

18007126457 is an equidigital number, since it uses as much as digits as its factorization.

18007126457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580875078.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 18007126457 in words is "eighteen billion, seven million, one hundred twenty-six thousand, four hundred fifty-seven".