20445711670 has 16 divisors (see below), whose sum is σ = 37320624288. Its totient is φ = 8063097280.

The previous prime is 20445711641. The next prime is 20445711677. The reversal of 20445711670 is 7611754402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445711677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14397679 + ... + 14399098.

It is an arithmetic number, because the mean of its divisors is an integer number (2332539018).

Almost surely, 2^20445711670 is an apocalyptic number.

20445711670 is a deficient number, since it is larger than the sum of its proper divisors (16874912618).

20445711670 is a wasteful number, since it uses less digits than its factorization.

20445711670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28796855.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 20445711670 in words is "twenty billion, four hundred forty-five million, seven hundred eleven thousand, six hundred seventy".