19747047087572 has 12 divisors (see below), whose sum is σ = 39494094175200. Its totient is φ = 8463020180376.

The previous prime is 19747047087517. The next prime is 19747047087587. The reversal of 19747047087572 is 27578074074791.

19747047087572 is an admirable number.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

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, 352625840822 + ... + 352625840877.

It is an arithmetic number, because the mean of its divisors is an integer number (3291174514600).

Almost surely, 2^{19747047087572} is an apocalyptic number.

It is an amenable number.

19747047087572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19747047087572 is a wasteful number, since it uses less digits than its factorization.

19747047087572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705251681710 (or 705251681708 counting only the distinct ones).

The product of its (nonzero) digits is 193616640, while the sum is 68.

The spelling of 19747047087572 in words is "nineteen trillion, seven hundred forty-seven billion, forty-seven million, eighty-seven thousand, five hundred seventy-two".