20705486132 has 12 divisors (see below), whose sum is σ = 38141685120. Its totient is φ = 9807861816.

The previous prime is 20705486129. The next prime is 20705486161. The reversal of 20705486132 is 23168450702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136220228 + ... + 136220379.

It is an arithmetic number, because the mean of its divisors is an integer number (3178473760).

Almost surely, 2^20705486132 is an apocalyptic number.

It is an amenable number.

20705486132 is a deficient number, since it is larger than the sum of its proper divisors (17436198988).

20705486132 is a wasteful number, since it uses less digits than its factorization.

20705486132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272440630 (or 272440628 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20705486132 in words is "twenty billion, seven hundred five million, four hundred eighty-six thousand, one hundred thirty-two".