20623441261051 has 16 divisors (see below), whose sum is σ = 21075743319840. Its totient is φ = 20175878511360.

The previous prime is 20623441261001. The next prime is 20623441261069. The reversal of 20623441261051 is 15016214432602.

It is a cyclic number.

It is not a de Polignac number, because 20623441261051 - 2¹³ = 20623441252859 is a prime.

It is a super-2 number, since 2×20623441261051² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20623441261051.

It is not an unprimeable number, because it can be changed into a prime (20623441261001) 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, 19264681 + ... + 20307013.

It is an arithmetic number, because the mean of its divisors is an integer number (1317233957490).

Almost surely, 2^{20623441261051} is an apocalyptic number.

20623441261051 is a deficient number, since it is larger than the sum of its proper divisors (452302058789).

20623441261051 is a wasteful number, since it uses less digits than its factorization.

20623441261051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044606.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 20623441261051 its reverse (15016214432602), we get a palindrome (35639655693653).

The spelling of 20623441261051 in words is "twenty trillion, six hundred twenty-three billion, four hundred forty-one million, two hundred sixty-one thousand, fifty-one".