8261126247 has 16 divisors (see below), whose sum is σ = 12077188992. Its totient is φ = 4981324320.

The previous prime is 8261126243. The next prime is 8261126281. The reversal of 8261126247 is 7426211628.

It is not a de Polignac number, because 8261126247 - 2² = 8261126243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261126243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628873 + ... + 641874.

It is an arithmetic number, because the mean of its divisors is an integer number (754824312).

Almost surely, 2^8261126247 is an apocalyptic number.

8261126247 is a deficient number, since it is larger than the sum of its proper divisors (3816062745).

8261126247 is a wasteful number, since it uses less digits than its factorization.

8261126247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270958.

The product of its digits is 64512, while the sum is 39.

The square root of 8261126247 is about 90890.7379604765. The cubic root of 8261126247 is about 2021.5279625637.

The spelling of 8261126247 in words is "eight billion, two hundred sixty-one million, one hundred twenty-six thousand, two hundred forty-seven".