20204579850 has 384 divisors, whose sum is σ = 65335818240. Its totient is φ = 4016839680.

The previous prime is 20204579797. The next prime is 20204579861. The reversal of 20204579850 is 5897540202.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17020957 + ... + 17022143.

It is an arithmetic number, because the mean of its divisors is an integer number (170145360).

Almost surely, 2^20204579850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20204579850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32667909120).

20204579850 is an abundant number, since it is smaller than the sum of its proper divisors (45131238390).

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

20204579850 is a wasteful number, since it uses less digits than its factorization.

20204579850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 20204579850 in words is "twenty billion, two hundred four million, five hundred seventy-nine thousand, eight hundred fifty".