20466735844 has 27 divisors (see below), whose sum is σ = 36088719177. Its totient is φ = 10156257504.

The previous prime is 20466735833. The next prime is 20466735853. The reversal of 20466735844 is 44853766402.

The square root of 20466735844 is 143062.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4156380900 + 16310354944 = 64470^2 + 127712^2 .

It is a super-2 number, since 2×20466735844² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66666739 + ... + 66667045.

Almost surely, 2^20466735844 is an apocalyptic number.

20466735844 is the 143062-nd square number.

It is an amenable number.

20466735844 is a deficient number, since it is larger than the sum of its proper divisors (15621983333).

20466735844 is an frugal number, since it uses more digits than its factorization.

20466735844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 49.

Multiplying 20466735844 by its sum of digits (49), we get a square (1002870056356 = 1001434²).

The spelling of 20466735844 in words is "twenty billion, four hundred sixty-six million, seven hundred thirty-five thousand, eight hundred forty-four".