16696859400 has 576 divisors, whose sum is σ = 65872867200. Its totient is φ = 3863531520.

The previous prime is 16696859351. The next prime is 16696859479. The reversal of 16696859400 is 495869661.

It is a happy number.

It is a super-3 number, since 3×16696859400³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20287389 + ... + 20288211.

Almost surely, 2^16696859400 is an apocalyptic number.

16696859400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16696859400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32936433600).

16696859400 is an abundant number, since it is smaller than the sum of its proper divisors (49176007800).

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

16696859400 is a wasteful number, since it uses less digits than its factorization.

16696859400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

It can be divided in two parts, 16696 and 859400, that added together give a square (876096 = 936²).

The spelling of 16696859400 in words is "sixteen billion, six hundred ninety-six million, eight hundred fifty-nine thousand, four hundred".