18071267122416 has 80 divisors (see below), whose sum is σ = 48872528457984. Its totient is φ = 5743084925952.

The previous prime is 18071267122409. The next prime is 18071267122421. The reversal of 18071267122416 is 61422176217081.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26320521 + ... + 26998376.

Almost surely, 2^{18071267122416} is an apocalyptic number.

18071267122416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18071267122416 is an abundant number, since it is smaller than the sum of its proper divisors (30801261335568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18071267122416 is a wasteful number, since it uses less digits than its factorization.

18071267122416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53319238 (or 53319232 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 18071267122416 in words is "eighteen trillion, seventy-one billion, two hundred sixty-seven million, one hundred twenty-two thousand, four hundred sixteen".