6261968861 has 2 divisors, whose sum is σ = 6261968862. Its totient is φ = 6261968860.

The previous prime is 6261968849. The next prime is 6261968879. The reversal of 6261968861 is 1688691626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6157540900 + 104427961 = 78470^2 + 10219^2 .

It is a cyclic number.

It is not a de Polignac number, because 6261968861 - 2²² = 6257774557 is a prime.

It is a super-2 number, since 2×6261968861² = 78424508032267274642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6261968821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3130984430 + 3130984431.

It is an arithmetic number, because the mean of its divisors is an integer number (3130984431).

Almost surely, 2^6261968861 is an apocalyptic number.

It is an amenable number.

6261968861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6261968861 is an equidigital number, since it uses as much as digits as its factorization.

6261968861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 53.

The square root of 6261968861 is about 79132.6030217634. The cubic root of 6261968861 is about 1843.1908304967.

The spelling of 6261968861 in words is "six billion, two hundred sixty-one million, nine hundred sixty-eight thousand, eight hundred sixty-one".