16595591040 has 1280 divisors, whose sum is σ = 74644416000. Its totient is φ = 3427909632.

The previous prime is 16595590997. The next prime is 16595591041. The reversal of 16595591040 is 4019559561.

It is a happy number.

16595591040 is a `hidden beast` number, since 1 + 6 + 59 + 5 + 591 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16595591041) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 199946839 + ... + 199946921.

It is an arithmetic number, because the mean of its divisors is an integer number (58315950).

Almost surely, 2^16595591040 is an apocalyptic number.

16595591040 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 16595591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37322208000).

16595591040 is an abundant number, since it is smaller than the sum of its proper divisors (58048824960).

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

16595591040 is a wasteful number, since it uses less digits than its factorization.

16595591040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 16595591040 in words is "sixteen billion, five hundred ninety-five million, five hundred ninety-one thousand, forty".