5261996990805 has 16 divisors (see below), whose sum is σ = 8419447405824. Its totient is φ = 2806314321600.

The previous prime is 5261996990797. The next prime is 5261996990827. The reversal of 5261996990805 is 5080996991625.

It is not a de Polignac number, because 5261996990805 - 2³ = 5261996990797 is a prime.

It is a super-2 number, since 2×5261996990805² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5261996990805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4735546 + ... + 5740155.

It is an arithmetic number, because the mean of its divisors is an integer number (526215462864).

Almost surely, 2^{5261996990805} is an apocalyptic number.

It is an amenable number.

5261996990805 is a deficient number, since it is larger than the sum of its proper divisors (3157450415019).

5261996990805 is a wasteful number, since it uses less digits than its factorization.

5261996990805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10509196.

The product of its (nonzero) digits is 94478400, while the sum is 69.

The spelling of 5261996990805 in words is "five trillion, two hundred sixty-one billion, nine hundred ninety-six million, nine hundred ninety thousand, eight hundred five".