20145886586 has 32 divisors (see below), whose sum is σ = 34756853760. Its totient is φ = 8578796400.

The previous prime is 20145886543. The next prime is 20145886591. The reversal of 20145886586 is 68568854102.

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, 2592575 + ... + 2600333.

It is an arithmetic number, because the mean of its divisors is an integer number (1086151680).

Almost surely, 2^20145886586 is an apocalyptic number.

20145886586 is a deficient number, since it is larger than the sum of its proper divisors (14610967174).

20145886586 is a wasteful number, since it uses less digits than its factorization.

20145886586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8930.

The product of its (nonzero) digits is 3686400, while the sum is 53.

The spelling of 20145886586 in words is "twenty billion, one hundred forty-five million, eight hundred eighty-six thousand, five hundred eighty-six".