5261009993 has 2 divisors, whose sum is σ = 5261009994. Its totient is φ = 5261009992.

The previous prime is 5261009989. The next prime is 5261010019. The reversal of 5261009993 is 3999001625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3441816889 + 1819193104 = 58667^2 + 42652^2 .

It is a cyclic number.

It is not a de Polignac number, because 5261009993 - 2² = 5261009989 is a prime.

It is a super-2 number, since 2×5261009993² = 55356452292891720098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5261009933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630504996 + 2630504997.

It is an arithmetic number, because the mean of its divisors is an integer number (2630504997).

Almost surely, 2^5261009993 is an apocalyptic number.

It is an amenable number.

5261009993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5261009993 is an equidigital number, since it uses as much as digits as its factorization.

5261009993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 5261009993 is about 72532.8201092443. The cubic root of 5261009993 is about 1739.2274274242.

The spelling of 5261009993 in words is "five billion, two hundred sixty-one million, nine thousand, nine hundred ninety-three".