18645057252458 has 32 divisors (see below), whose sum is σ = 36446446761984. Its totient is φ = 6942180333312.

The previous prime is 18645057252379. The next prime is 18645057252461. The reversal of 18645057252458 is 85425275054681.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18645057252458.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3013096010 + ... + 3013102197.

It is an arithmetic number, because the mean of its divisors is an integer number (1138951461312).

Almost surely, 2^{18645057252458} is an apocalyptic number.

18645057252458 is a deficient number, since it is larger than the sum of its proper divisors (17801389509526).

18645057252458 is a wasteful number, since it uses less digits than its factorization.

18645057252458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026198246.

The product of its (nonzero) digits is 107520000, while the sum is 62.

The spelling of 18645057252458 in words is "eighteen trillion, six hundred forty-five billion, fifty-seven million, two hundred fifty-two thousand, four hundred fifty-eight".