16867178864 has 160 divisors (see below), whose sum is σ = 37940428800. Its totient is φ = 7211151360.

The previous prime is 16867178819. The next prime is 16867178879. The reversal of 16867178864 is 46887176861.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 16867178797 and 16867178806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20346002 + ... + 20346830.

It is an arithmetic number, because the mean of its divisors is an integer number (237127680).

Almost surely, 2^16867178864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16867178864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18970214400).

16867178864 is an abundant number, since it is smaller than the sum of its proper divisors (21073249936).

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

16867178864 is a wasteful number, since it uses less digits than its factorization.

16867178864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1025 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 62.

The spelling of 16867178864 in words is "sixteen billion, eight hundred sixty-seven million, one hundred seventy-eight thousand, eight hundred sixty-four".