16249689904 has 80 divisors (see below), whose sum is σ = 38173467456. Its totient is φ = 6541516800.

The previous prime is 16249689889. The next prime is 16249689913. The reversal of 16249689904 is 40998694261.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983794 + ... + 1000174.

Almost surely, 2^16249689904 is an apocalyptic number.

16249689904 is a gapful number since it is divisible by the number (14) 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 16249689904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19086733728).

16249689904 is an abundant number, since it is smaller than the sum of its proper divisors (21923777552).

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

16249689904 is a wasteful number, since it uses less digits than its factorization.

16249689904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16934 (or 16928 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 16249689904 in words is "sixteen billion, two hundred forty-nine million, six hundred eighty-nine thousand, nine hundred four".