16519492080 has 640 divisors, whose sum is σ = 70528819200. Its totient is φ = 3460755456.

The previous prime is 16519492079. The next prime is 16519492103. The reversal of 16519492080 is 8029491561.

16519492080 is a `hidden beast` number, since 16 + 519 + 49 + 2 + 0 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 45012057 + ... + 45012423.

It is an arithmetic number, because the mean of its divisors is an integer number (110201280).

Almost surely, 2^16519492080 is an apocalyptic number.

16519492080 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 16519492080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35264409600).

16519492080 is an abundant number, since it is smaller than the sum of its proper divisors (54009327120).

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

16519492080 is a wasteful number, since it uses less digits than its factorization.

16519492080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 16519492080 in words is "sixteen billion, five hundred nineteen million, four hundred ninety-two thousand, eighty".