20610803140 has 12 divisors (see below), whose sum is σ = 43282686636. Its totient is φ = 8244321248.

The previous prime is 20610803131. The next prime is 20610803149. The reversal of 20610803140 is 4130801602.

It is an interprime number because it is at equal distance from previous prime (20610803131) and next prime (20610803149).

It can be written as a sum of positive squares in 2 ways, for example, as 3017964096 + 17592839044 = 54936^2 + 132638^2 .

It is not an unprimeable number, because it can be changed into a prime (20610803149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515270059 + ... + 515270098.

It is an arithmetic number, because the mean of its divisors is an integer number (3606890553).

Almost surely, 2^20610803140 is an apocalyptic number.

20610803140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20610803140 is an abundant number, since it is smaller than the sum of its proper divisors (22671883496).

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

20610803140 is a wasteful number, since it uses less digits than its factorization.

20610803140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030540166 (or 1030540164 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 20610803140 in words is "twenty billion, six hundred ten million, eight hundred three thousand, one hundred forty".