20642462244 has 36 divisors (see below), whose sum is σ = 52192956816. Its totient is φ = 6879053808.

The previous prime is 20642462213. The next prime is 20642462287. The reversal of 20642462244 is 44226424602.

20642462244 is a `hidden beast` number, since 2 + 0 + 6 + 4 + 24 + 622 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20642462244² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20642462199 and 20642462208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72487 + ... + 215729.

It is an arithmetic number, because the mean of its divisors is an integer number (1449804356).

Almost surely, 2^20642462244 is an apocalyptic number.

It is an amenable number.

20642462244 is an abundant number, since it is smaller than the sum of its proper divisors (31550494572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20642462244 is a wasteful number, since it uses less digits than its factorization.

20642462244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147256 (or 147251 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 20642462244 its reverse (44226424602), we get a palindrome (64868886846).

The spelling of 20642462244 in words is "twenty billion, six hundred forty-two million, four hundred sixty-two thousand, two hundred forty-four".