19952578532 has 12 divisors (see below), whose sum is σ = 34918001580. Its totient is φ = 9976006656.

The previous prime is 19952578531. The next prime is 19952578549. The reversal of 19952578532 is 23587525991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6362614756 + 13589963776 = 79766^2 + 116576^2 .

It is not an unprimeable number, because it can be changed into a prime (19952578531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238628 + ... + 311204.

It is an arithmetic number, because the mean of its divisors is an integer number (2909833465).

Almost surely, 2^19952578532 is an apocalyptic number.

It is an amenable number.

19952578532 is a deficient number, since it is larger than the sum of its proper divisors (14965423048).

19952578532 is a wasteful number, since it uses less digits than its factorization.

19952578532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141310 (or 141308 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 56.

The spelling of 19952578532 in words is "nineteen billion, nine hundred fifty-two million, five hundred seventy-eight thousand, five hundred thirty-two".