16897814140 has 24 divisors (see below), whose sum is σ = 35500413312. Its totient is φ = 6756267840.

The previous prime is 16897814117. The next prime is 16897814159. The reversal of 16897814140 is 4141879861.

It is a happy number.

It is a super-2 number, since 2×16897814140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129804 + ... + 225043.

It is an arithmetic number, because the mean of its divisors is an integer number (1479183888).

Almost surely, 2^16897814140 is an apocalyptic number.

16897814140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16897814140 is an abundant number, since it is smaller than the sum of its proper divisors (18602599172).

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

16897814140 is a wasteful number, since it uses less digits than its factorization.

16897814140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357237 (or 357235 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 16897814140 in words is "sixteen billion, eight hundred ninety-seven million, eight hundred fourteen thousand, one hundred forty".