19772673528 has 32 divisors (see below), whose sum is σ = 49435689600. Its totient is φ = 6590357088.

The previous prime is 19772673499. The next prime is 19772673533. The reversal of 19772673528 is 82537627791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366925 + ... + 417347.

It is an arithmetic number, because the mean of its divisors is an integer number (1544865300).

Almost surely, 2^19772673528 is an apocalyptic number.

It is an amenable number.

19772673528 is an abundant number, since it is smaller than the sum of its proper divisors (29663016072).

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

19772673528 is a wasteful number, since it uses less digits than its factorization.

19772673528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66771 (or 66767 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The spelling of 19772673528 in words is "nineteen billion, seven hundred seventy-two million, six hundred seventy-three thousand, five hundred twenty-eight".