16291577140 has 24 divisors (see below), whose sum is σ = 35046760392. Its totient is φ = 6357688320.

The previous prime is 16291577119. The next prime is 16291577171. The reversal of 16291577140 is 4177519261.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114789796 + 16176787344 = 10714^2 + 127188^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9933069 + ... + 9934708.

It is an arithmetic number, because the mean of its divisors is an integer number (1460281683).

Almost surely, 2^16291577140 is an apocalyptic number.

16291577140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16291577140 is an abundant number, since it is smaller than the sum of its proper divisors (18755183252).

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

16291577140 is a wasteful number, since it uses less digits than its factorization.

16291577140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19867827 (or 19867825 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 16291577140 in words is "sixteen billion, two hundred ninety-one million, five hundred seventy-seven thousand, one hundred forty".