20437506057795 has 16 divisors (see below), whose sum is σ = 32700067558560. Its totient is φ = 10899983942144.

The previous prime is 20437506057763. The next prime is 20437506057797. The reversal of 20437506057795 is 59775060573402.

It is a happy number.

It is a Cunningham number, because it is equal to 4520786²-1.

It is a cyclic number.

It is not a de Polignac number, because 20437506057795 - 2⁵ = 20437506057763 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 12808891 + ... + 14315819.

It is an arithmetic number, because the mean of its divisors is an integer number (2043754222410).

Almost surely, 2^{20437506057795} is an apocalyptic number.

20437506057795 is a deficient number, since it is larger than the sum of its proper divisors (12262561500765).

20437506057795 is a wasteful number, since it uses less digits than its factorization.

20437506057795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411094.

The product of its (nonzero) digits is 55566000, while the sum is 60.

The spelling of 20437506057795 in words is "twenty trillion, four hundred thirty-seven billion, five hundred six million, fifty-seven thousand, seven hundred ninety-five".