7860259961 has 4 divisors (see below), whose sum is σ = 8322628212. Its totient is φ = 7397891712.

The previous prime is 7860259951. The next prime is 7860259969. The reversal of 7860259961 is 1699520687.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7200540736 + 659719225 = 84856^2 + 25685^2 .

It is a cyclic number.

It is not a de Polignac number, because 7860259961 - 2¹⁰ = 7860258937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7860259969) 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, 231184100 + ... + 231184133.

It is an arithmetic number, because the mean of its divisors is an integer number (2080657053).

Almost surely, 2^7860259961 is an apocalyptic number.

It is an amenable number.

7860259961 is a deficient number, since it is larger than the sum of its proper divisors (462368251).

7860259961 is a wasteful number, since it uses less digits than its factorization.

7860259961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462368250.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 7860259961 is about 88658.1071363471. The cubic root of 7860259961 is about 1988.2865279658.

The spelling of 7860259961 in words is "seven billion, eight hundred sixty million, two hundred fifty-nine thousand, nine hundred sixty-one".