18361336479 has 16 divisors (see below), whose sum is σ = 24548209920. Its totient is φ = 12207708800.

The previous prime is 18361336463. The next prime is 18361336501. The reversal of 18361336479 is 97463316381.

It is a cyclic number.

It is not a de Polignac number, because 18361336479 - 2⁴ = 18361336463 is a prime.

It is a super-2 number, since 2×18361336479² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18361336429) 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, 3921862 + ... + 3926540.

It is an arithmetic number, because the mean of its divisors is an integer number (1534263120).

Almost surely, 2^18361336479 is an apocalyptic number.

18361336479 is a deficient number, since it is larger than the sum of its proper divisors (6186873441).

18361336479 is a wasteful number, since it uses less digits than its factorization.

18361336479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950.

The product of its digits is 1959552, while the sum is 51.

The spelling of 18361336479 in words is "eighteen billion, three hundred sixty-one million, three hundred thirty-six thousand, four hundred seventy-nine".