18485464130557 has 4 divisors (see below), whose sum is σ = 18507496865760. Its totient is φ = 18463431395356.

The previous prime is 18485464130543. The next prime is 18485464130561. The reversal of 18485464130557 is 75503146458481.

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 18485464130557 - 2⁴³ = 9689371108349 is a prime.

It is a super-2 number, since 2×18485464130557² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18485464130495 and 18485464130504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18485464130537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11016366343 + ... + 11016368020.

It is an arithmetic number, because the mean of its divisors is an integer number (4626874216440).

Almost surely, 2^{18485464130557} is an apocalyptic number.

It is an amenable number.

18485464130557 is a deficient number, since it is larger than the sum of its proper divisors (22032735203).

18485464130557 is an equidigital number, since it uses as much as digits as its factorization.

18485464130557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22032735202.

The product of its (nonzero) digits is 64512000, while the sum is 61.

The spelling of 18485464130557 in words is "eighteen trillion, four hundred eighty-five billion, four hundred sixty-four million, one hundred thirty thousand, five hundred fifty-seven".