16519940052 has 192 divisors, whose sum is σ = 50313166848. Its totient is φ = 4093488000.

The previous prime is 16519940039. The next prime is 16519940057. The reversal of 16519940052 is 25004991561.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 16519939986 and 16519940013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16519940057) 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, 2029663 + ... + 2037785.

It is an arithmetic number, because the mean of its divisors is an integer number (262047744).

Almost surely, 2^16519940052 is an apocalyptic number.

16519940052 is a gapful number since it is divisible by the number (12) 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 16519940052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25156583424).

16519940052 is an abundant number, since it is smaller than the sum of its proper divisors (33793226796).

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

16519940052 is a wasteful number, since it uses less digits than its factorization.

16519940052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250 (or 8248 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 16519940052 in words is "sixteen billion, five hundred nineteen million, nine hundred forty thousand, fifty-two".