19697074200 has 144 divisors (see below), whose sum is σ = 66588334800. Its totient is φ = 5217696000.

The previous prime is 19697074171. The next prime is 19697074219. The reversal of 19697074200 is 247079691.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 235566 + ... + 308034.

Almost surely, 2^19697074200 is an apocalyptic number.

19697074200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19697074200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33294167400).

19697074200 is an abundant number, since it is smaller than the sum of its proper divisors (46891260600).

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

19697074200 is a wasteful number, since it uses less digits than its factorization.

19697074200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72642 (or 72630 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 19697074200 in words is "nineteen billion, six hundred ninety-seven million, seventy-four thousand, two hundred".