19705481528 has 16 divisors (see below), whose sum is σ = 36949500000. Its totient is φ = 9852281536.

The previous prime is 19705481501. The next prime is 19705481561. The reversal of 19705481528 is 82518450791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185348 + ... + 271596.

It is an arithmetic number, because the mean of its divisors is an integer number (2309343750).

Almost surely, 2^19705481528 is an apocalyptic number.

It is an amenable number.

19705481528 is a deficient number, since it is larger than the sum of its proper divisors (17244018472).

19705481528 is a wasteful number, since it uses less digits than its factorization.

19705481528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114814 (or 114810 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 19705481528 in words is "nineteen billion, seven hundred five million, four hundred eighty-one thousand, five hundred twenty-eight".