18498321451007 has 16 divisors (see below), whose sum is σ = 19676430342240. Its totient is φ = 17357360130432.

The previous prime is 18498321451003. The next prime is 18498321451021. The reversal of 18498321451007 is 70015412389481.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18498321451007 - 2² = 18498321451003 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18498321451007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18498321451003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9190133 + ... + 11020670.

It is an arithmetic number, because the mean of its divisors is an integer number (1229776896390).

Almost surely, 2^{18498321451007} is an apocalyptic number.

18498321451007 is a deficient number, since it is larger than the sum of its proper divisors (1178108891233).

18498321451007 is a wasteful number, since it uses less digits than its factorization.

18498321451007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20211722.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 18498321451007 in words is "eighteen trillion, four hundred ninety-eight billion, three hundred twenty-one million, four hundred fifty-one thousand, seven".