219897925620 has 24 divisors (see below), whose sum is σ = 615714191904. Its totient is φ = 58639446816.

The previous prime is 219897925609. The next prime is 219897925661. The reversal of 219897925620 is 26529798912.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 3664965427 = 219897925620 / (2 + 1 + 9 + 8 + 9 + 7 + 9 + 2 + 5 + 6 + 2 + 0).

It is a congruent number.

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, 1832482654 + ... + 1832482773.

It is an arithmetic number, because the mean of its divisors is an integer number (25654757996).

Almost surely, 2^219897925620 is an apocalyptic number.

219897925620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219897925620 is an abundant number, since it is smaller than the sum of its proper divisors (395816266284).

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

219897925620 is a wasteful number, since it uses less digits than its factorization.

219897925620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664965439 (or 3664965437 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 219897925620 in words is "two hundred nineteen billion, eight hundred ninety-seven million, nine hundred twenty-five thousand, six hundred twenty".