16397306388 has 48 divisors (see below), whose sum is σ = 42537564160. Its totient is φ = 5462422272.

The previous prime is 16397306381. The next prime is 16397306399. The reversal of 16397306388 is 88360379361.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16397306381) 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, 133956 + ... + 225252.

Almost surely, 2^16397306388 is an apocalyptic number.

16397306388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16397306388 is an abundant number, since it is smaller than the sum of its proper divisors (26140257772).

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

16397306388 is a wasteful number, since it uses less digits than its factorization.

16397306388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92973 (or 92965 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 16397306388 in words is "sixteen billion, three hundred ninety-seven million, three hundred six thousand, three hundred eighty-eight".