20642232315 has 8 divisors (see below), whose sum is σ = 33027571728. Its totient is φ = 11009190560.

The previous prime is 20642232307. The next prime is 20642232341. The reversal of 20642232315 is 51323224602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20642232315 - 2³ = 20642232307 is a prime.

It is a super-2 number, since 2×20642232315² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688074396 + ... + 688074425.

It is an arithmetic number, because the mean of its divisors is an integer number (4128446466).

Almost surely, 2^20642232315 is an apocalyptic number.

20642232315 is a deficient number, since it is larger than the sum of its proper divisors (12385339413).

20642232315 is a wasteful number, since it uses less digits than its factorization.

20642232315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376148829.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 20642232315 its reverse (51323224602), we get a palindrome (71965456917).

The spelling of 20642232315 in words is "twenty billion, six hundred forty-two million, two hundred thirty-two thousand, three hundred fifteen".