20085573018 has 32 divisors (see below), whose sum is σ = 48326192640. Its totient is φ = 5436696240.

The previous prime is 20085572987. The next prime is 20085573023. The reversal of 20085573018 is 81037558002.

It is a super-2 number, since 2×20085573018² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12584148 + ... + 12585743.

It is an arithmetic number, because the mean of its divisors is an integer number (1510193520).

Almost surely, 2^20085573018 is an apocalyptic number.

20085573018 is an abundant number, since it is smaller than the sum of its proper divisors (28240619622).

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

20085573018 is a wasteful number, since it uses less digits than its factorization.

20085573018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25169922.

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 20085573018 in words is "twenty billion, eighty-five million, five hundred seventy-three thousand, eighteen".