20247553221370 has 32 divisors (see below), whose sum is σ = 37306995199488. Its totient is φ = 7908395136768.

The previous prime is 20247553221271. The next prime is 20247553221373. The reversal of 20247553221370 is 7312235574202.

It is a super-2 number, since 2×20247553221370² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20247553221373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49542334 + ... + 49949353.

It is an arithmetic number, because the mean of its divisors is an integer number (1165843599984).

Almost surely, 2^{20247553221370} is an apocalyptic number.

20247553221370 is a deficient number, since it is larger than the sum of its proper divisors (17059441978118).

20247553221370 is a wasteful number, since it uses less digits than its factorization.

20247553221370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99492174.

The product of its (nonzero) digits is 705600, while the sum is 43.

Adding to 20247553221370 its reverse (7312235574202), we get a palindrome (27559788795572).

The spelling of 20247553221370 in words is "twenty trillion, two hundred forty-seven billion, five hundred fifty-three million, two hundred twenty-one thousand, three hundred seventy".