19660716252 has 30 divisors (see below), whose sum is σ = 51396996728. Its totient is φ = 6553571976.

The previous prime is 19660716239. The next prime is 19660716293. The reversal of 19660716252 is 25261706691.

19660716252 is a `hidden beast` number, since 1 + 9 + 6 + 607 + 16 + 25 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 19660716198 and 19660716207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30340288 + ... + 30340935.

Almost surely, 2^19660716252 is an apocalyptic number.

19660716252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19660716252 is an abundant number, since it is smaller than the sum of its proper divisors (31736280476).

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

19660716252 is a wasteful number, since it uses less digits than its factorization.

19660716252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60681239 (or 60681228 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19660716252 in words is "nineteen billion, six hundred sixty million, seven hundred sixteen thousand, two hundred fifty-two".