16519565490 has 32 divisors (see below), whose sum is σ = 39936360960. Its totient is φ = 4373061504.

The previous prime is 16519565467. The next prime is 16519565501. The reversal of 16519565490 is 9456591561.

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, 2005570 + ... + 2013789.

It is an arithmetic number, because the mean of its divisors is an integer number (1248011280).

Almost surely, 2^16519565490 is an apocalyptic number.

16519565490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16519565490 is an abundant number, since it is smaller than the sum of its proper divisors (23416795470).

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

16519565490 is a wasteful number, since it uses less digits than its factorization.

16519565490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019506.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 16519565490 in words is "sixteen billion, five hundred nineteen million, five hundred sixty-five thousand, four hundred ninety".