204426215620 has 48 divisors (see below), whose sum is σ = 472868742528. Its totient is φ = 73615080960.

The previous prime is 204426215611. The next prime is 204426215627. The reversal of 204426215620 is 26512624402.

It is not an unprimeable number, because it can be changed into a prime (204426215627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4488069 + ... + 4533388.

It is an arithmetic number, because the mean of its divisors is an integer number (9851432136).

Almost surely, 2^204426215620 is an apocalyptic number.

204426215620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204426215620 is an abundant number, since it is smaller than the sum of its proper divisors (268442526908).

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

204426215620 is a wasteful number, since it uses less digits than its factorization.

204426215620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021580 (or 9021578 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 204426215620 in words is "two hundred four billion, four hundred twenty-six million, two hundred fifteen thousand, six hundred twenty".