20586432140 has 12 divisors (see below), whose sum is σ = 43231507536. Its totient is φ = 8234572848.

The previous prime is 20586432131. The next prime is 20586432143. The reversal of 20586432140 is 4123468502.

It is a self number, because there is not a number n which added to its sum of digits gives 20586432140.

It is not an unprimeable number, because it can be changed into a prime (20586432143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514660784 + ... + 514660823.

It is an arithmetic number, because the mean of its divisors is an integer number (3602625628).

Almost surely, 2^20586432140 is an apocalyptic number.

20586432140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20586432140 is an abundant number, since it is smaller than the sum of its proper divisors (22645075396).

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

20586432140 is a wasteful number, since it uses less digits than its factorization.

20586432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029321616 (or 1029321614 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 20586432140 in words is "twenty billion, five hundred eighty-six million, four hundred thirty-two thousand, one hundred forty".