19970545352 has 32 divisors (see below), whose sum is σ = 38385839520. Its totient is φ = 9734674560.

The previous prime is 19970545349. The next prime is 19970545369. The reversal of 19970545352 is 25354507991.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19970545352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446723 + ... + 489389.

It is an arithmetic number, because the mean of its divisors is an integer number (1199557485).

Almost surely, 2^19970545352 is an apocalyptic number.

It is an amenable number.

19970545352 is a deficient number, since it is larger than the sum of its proper divisors (18415294168).

19970545352 is a wasteful number, since it uses less digits than its factorization.

19970545352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44141 (or 44137 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 19970545352 in words is "nineteen billion, nine hundred seventy million, five hundred forty-five thousand, three hundred fifty-two".