8126780827 has 16 divisors (see below), whose sum is σ = 9392976000. Its totient is φ = 6949031040.

The previous prime is 8126780807. The next prime is 8126780887. The reversal of 8126780827 is 7280876218.

It is a cyclic number.

It is not a de Polignac number, because 8126780827 - 2¹⁵ = 8126748059 is a prime.

It is a super-2 number, since 2×8126780827² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8126780807) 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, 304924 + ... + 330502.

It is an arithmetic number, because the mean of its divisors is an integer number (587061000).

Almost surely, 2^8126780827 is an apocalyptic number.

8126780827 is a deficient number, since it is larger than the sum of its proper divisors (1266195173).

8126780827 is a wasteful number, since it uses less digits than its factorization.

8126780827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27306.

The product of its (nonzero) digits is 602112, while the sum is 49.

The square root of 8126780827 is about 90148.6595962469. The cubic root of 8126780827 is about 2010.5097448111.

The spelling of 8126780827 in words is "eight billion, one hundred twenty-six million, seven hundred eighty thousand, eight hundred twenty-seven".