19752106784 has 12 divisors (see below), whose sum is σ = 38886960294. Its totient is φ = 9876053376.

The previous prime is 19752106783. The next prime is 19752106793. The reversal of 19752106784 is 48760125791.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14280250000 + 5471856784 = 119500^2 + 73972^2 .

It is not an unprimeable number, because it can be changed into a prime (19752106783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308626637 + ... + 308626700.

Almost surely, 2^19752106784 is an apocalyptic number.

It is an amenable number.

19752106784 is a deficient number, since it is larger than the sum of its proper divisors (19134853510).

19752106784 is an equidigital number, since it uses as much as digits as its factorization.

19752106784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617253347 (or 617253339 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 19752106784 in words is "nineteen billion, seven hundred fifty-two million, one hundred six thousand, seven hundred eighty-four".