20782913132 has 6 divisors (see below), whose sum is σ = 36370097988. Its totient is φ = 10391456564.

The previous prime is 20782913119. The next prime is 20782913159. The reversal of 20782913132 is 23131928702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597864138 + ... + 2597864145.

It is an arithmetic number, because the mean of its divisors is an integer number (6061682998).

Almost surely, 2^20782913132 is an apocalyptic number.

It is an amenable number.

20782913132 is a deficient number, since it is larger than the sum of its proper divisors (15587184856).

20782913132 is a wasteful number, since it uses less digits than its factorization.

20782913132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195728287 (or 5195728285 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 20782913132 in words is "twenty billion, seven hundred eighty-two million, nine hundred thirteen thousand, one hundred thirty-two".