16404729799590 has 128 divisors (see below), whose sum is σ = 48312022026240. Its totient is φ = 3976904135520.

The previous prime is 16404729799573. The next prime is 16404729799597. The reversal of 16404729799590 is 9599792740461.

16404729799590 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 4 + 7 + 29 + 7 + 9 + 9 + 590 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404729799597) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33854974 + ... + 34336113.

It is an arithmetic number, because the mean of its divisors is an integer number (377437672080).

Almost surely, 2^{16404729799590} is an apocalyptic number.

16404729799590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16404729799590 is an abundant number, since it is smaller than the sum of its proper divisors (31907292226650).

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

16404729799590 is an equidigital number, since it uses as much as digits as its factorization.

16404729799590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68191126 (or 68191108 counting only the distinct ones).

The product of its (nonzero) digits is 308629440, while the sum is 72.

The spelling of 16404729799590 in words is "sixteen trillion, four hundred four billion, seven hundred twenty-nine million, seven hundred ninety-nine thousand, five hundred ninety".