20437506057796 has 9 divisors (see below), whose sum is σ = 35765651423901. Its totient is φ = 10218748508112.

The previous prime is 20437506057763. The next prime is 20437506057797. The reversal of 20437506057796 is 69775060573402.

It is a happy number.

The square root of 20437506057796 is 4520786.

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., 550044722500 + 19887461335296 = 741650^2 + 4459536^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20437506057797) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7911376 + ... + 10171768.

Almost surely, 2^{20437506057796} is an apocalyptic number.

20437506057796 is the 4520786-th square number.

It is an amenable number.

20437506057796 is a deficient number, since it is larger than the sum of its proper divisors (15328145366105).

20437506057796 is an frugal number, since it uses more digits than its factorization.

20437506057796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520790 (or 2260395 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 61.

The spelling of 20437506057796 in words is "twenty trillion, four hundred thirty-seven billion, five hundred six million, fifty-seven thousand, seven hundred ninety-six".