19553792220 has 72 divisors (see below), whose sum is σ = 59417358000. Its totient is φ = 5205185280.

The previous prime is 19553792197. The next prime is 19553792233. The reversal of 19553792220 is 2229735591.

19553792220 is a `hidden beast` number, since 1 + 9 + 5 + 537 + 92 + 2 + 20 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7656 + ... + 197904.

Almost surely, 2^19553792220 is an apocalyptic number.

19553792220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19553792220 is an abundant number, since it is smaller than the sum of its proper divisors (39863565780).

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

19553792220 is a wasteful number, since it uses less digits than its factorization.

19553792220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190835 (or 190830 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 19553792220 in words is "nineteen billion, five hundred fifty-three million, seven hundred ninety-two thousand, two hundred twenty".