8127266091 has 32 divisors (see below), whose sum is σ = 12482400768. Its totient is φ = 4607539200.

The previous prime is 8127266083. The next prime is 8127266099. The reversal of 8127266091 is 1906627218.

It is an interprime number because it is at equal distance from previous prime (8127266083) and next prime (8127266099).

It is not a de Polignac number, because 8127266091 - 2³ = 8127266083 is a prime.

It is a super-2 number, since 2×8127266091² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8127266099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1606516 + ... + 1611566.

It is an arithmetic number, because the mean of its divisors is an integer number (390075024).

Almost surely, 2^8127266091 is an apocalyptic number.

8127266091 is a deficient number, since it is larger than the sum of its proper divisors (4355134677).

8127266091 is a wasteful number, since it uses less digits than its factorization.

8127266091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 8127266091 is about 90151.3510214905. The cubic root of 8127266091 is about 2010.5497610079.

The spelling of 8127266091 in words is "eight billion, one hundred twenty-seven million, two hundred sixty-six thousand, ninety-one".