16637790040 has 128 divisors (see below), whose sum is σ = 40048473600. Its totient is φ = 6202828800.

The previous prime is 16637790011. The next prime is 16637790047. The reversal of 16637790040 is 4009773661.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16637790047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12967239 + ... + 12968521.

It is an arithmetic number, because the mean of its divisors is an integer number (312878700).

Almost surely, 2^16637790040 is an apocalyptic number.

16637790040 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 16637790040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20024236800).

16637790040 is an abundant number, since it is smaller than the sum of its proper divisors (23410683560).

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

16637790040 is a wasteful number, since it uses less digits than its factorization.

16637790040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 16637790040 in words is "sixteen billion, six hundred thirty-seven million, seven hundred ninety thousand, forty".