20642583370 has 32 divisors (see below), whose sum is σ = 39432096000. Its totient is φ = 7753595136.

The previous prime is 20642583349. The next prime is 20642583373. The reversal of 20642583370 is 7338524602.

It is a super-2 number, since 2×20642583370² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20642583373) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 63670 + ... + 212929.

It is an arithmetic number, because the mean of its divisors is an integer number (1232253000).

Almost surely, 2^20642583370 is an apocalyptic number.

20642583370 is a deficient number, since it is larger than the sum of its proper divisors (18789512630).

20642583370 is a wasteful number, since it uses less digits than its factorization.

20642583370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277062.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20642583370 in words is "twenty billion, six hundred forty-two million, five hundred eighty-three thousand, three hundred seventy".