6261313861 has 4 divisors (see below), whose sum is σ = 6830524224. Its totient is φ = 5692103500.

The previous prime is 6261313847. The next prime is 6261313867. The reversal of 6261313861 is 1683131626.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6261313861 - 2²¹ = 6259216709 is a prime.

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 6261313861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261313867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284605165 + ... + 284605186.

It is an arithmetic number, because the mean of its divisors is an integer number (1707631056).

Almost surely, 2^6261313861 is an apocalyptic number.

It is an amenable number.

6261313861 is a deficient number, since it is larger than the sum of its proper divisors (569210363).

6261313861 is a wasteful number, since it uses less digits than its factorization.

6261313861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569210362.

The product of its digits is 31104, while the sum is 37.

The square root of 6261313861 is about 79128.4642906710. The cubic root of 6261313861 is about 1843.1265625262.

The spelling of 6261313861 in words is "six billion, two hundred sixty-one million, three hundred thirteen thousand, eight hundred sixty-one".