20706370472 has 16 divisors (see below), whose sum is σ = 39260675700. Its totient is φ = 10236856960.

The previous prime is 20706370463. The next prime is 20706370483. The reversal of 20706370472 is 27407360702.

It can be written as a sum of positive squares in 2 ways, for example, as 19233806596 + 1472563876 = 138686^2 + 38374^2 .

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, 14540279 + ... + 14541702.

Almost surely, 2^20706370472 is an apocalyptic number.

It is an amenable number.

20706370472 is a deficient number, since it is larger than the sum of its proper divisors (18554305228).

20706370472 is a wasteful number, since it uses less digits than its factorization.

20706370472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29082076 (or 29082072 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 20706370472 in words is "twenty billion, seven hundred six million, three hundred seventy thousand, four hundred seventy-two".