20440070655 has 16 divisors (see below), whose sum is σ = 32706258144. Its totient is φ = 10900656000.

The previous prime is 20440070647. The next prime is 20440070663. The reversal of 20440070655 is 55607004402.

It is an interprime number because it is at equal distance from previous prime (20440070647) and next prime (20440070663).

It is not a de Polignac number, because 20440070655 - 2³ = 20440070647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257577 + ... + 327453.

It is an arithmetic number, because the mean of its divisors is an integer number (2044141134).

Almost surely, 2^20440070655 is an apocalyptic number.

20440070655 is a deficient number, since it is larger than the sum of its proper divisors (12266187489).

20440070655 is a wasteful number, since it uses less digits than its factorization.

20440070655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89386.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20440070655 in words is "twenty billion, four hundred forty million, seventy thousand, six hundred fifty-five".