18280007007 has 4 divisors (see below), whose sum is σ = 24373342680. Its totient is φ = 12186671336.

The previous prime is 18280007003. The next prime is 18280007021. The reversal of 18280007007 is 70070008281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18280007007 - 2² = 18280007003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280007003) 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, 3046667832 + ... + 3046667837.

It is an arithmetic number, because the mean of its divisors is an integer number (6093335670).

Almost surely, 2^18280007007 is an apocalyptic number.

18280007007 is a deficient number, since it is larger than the sum of its proper divisors (6093335673).

18280007007 is an equidigital number, since it uses as much as digits as its factorization.

18280007007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093335672.

The product of its (nonzero) digits is 6272, while the sum is 33.

The spelling of 18280007007 in words is "eighteen billion, two hundred eighty million, seven thousand, seven".