16335394378 has 8 divisors (see below), whose sum is σ = 24745696740. Its totient is φ = 8086828800.

The previous prime is 16335394363. The next prime is 16335394393. The reversal of 16335394378 is 87349353361.

It is an interprime number because it is at equal distance from previous prime (16335394363) and next prime (16335394393).

It can be written as a sum of positive squares in 2 ways, for example, as 16333606809 + 1787569 = 127803^2 + 1337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40433943 + ... + 40434346.

Almost surely, 2^16335394378 is an apocalyptic number.

16335394378 is a deficient number, since it is larger than the sum of its proper divisors (8410302362).

16335394378 is a wasteful number, since it uses less digits than its factorization.

16335394378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80868392.

The product of its digits is 4898880, while the sum is 52.

The spelling of 16335394378 in words is "sixteen billion, three hundred thirty-five million, three hundred ninety-four thousand, three hundred seventy-eight".