18383797473465 has 16 divisors (see below), whose sum is σ = 30039907362048. Its totient is φ = 9596081517696.

The previous prime is 18383797473449. The next prime is 18383797473479. The reversal of 18383797473465 is 56437479738381.

It is not a de Polignac number, because 18383797473465 - 2⁴ = 18383797473449 is a prime.

It is a super-3 number, since 3×18383797473465³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13038153532 + ... + 13038154941.

It is an arithmetic number, because the mean of its divisors is an integer number (1877494210128).

Almost surely, 2^{18383797473465} is an apocalyptic number.

18383797473465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18383797473465 is a deficient number, since it is larger than the sum of its proper divisors (11656109888583).

18383797473465 is a wasteful number, since it uses less digits than its factorization.

18383797473465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26076308528.

The product of its digits is 2560481280, while the sum is 75.

The spelling of 18383797473465 in words is "eighteen trillion, three hundred eighty-three billion, seven hundred ninety-seven million, four hundred seventy-three thousand, four hundred sixty-five".