20013201650 has 48 divisors (see below), whose sum is σ = 41381184768. Its totient is φ = 7151112000.

The previous prime is 20013201643. The next prime is 20013201671. The reversal of 20013201650 is 5610231002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476456 + ... + 516755.

It is an arithmetic number, because the mean of its divisors is an integer number (862108016).

Almost surely, 2^20013201650 is an apocalyptic number.

20013201650 is an abundant number, since it is smaller than the sum of its proper divisors (21367983118).

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

20013201650 is a wasteful number, since it uses less digits than its factorization.

20013201650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993267 (or 993262 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20013201650 its reverse (5610231002), we get a palindrome (25623432652).

The spelling of 20013201650 in words is "twenty billion, thirteen million, two hundred one thousand, six hundred fifty".