8061427491 has 16 divisors (see below), whose sum is σ = 11621514240. Its totient is φ = 4941108000.

The previous prime is 8061427469. The next prime is 8061427499. The reversal of 8061427491 is 1947241608.

It is not a de Polignac number, because 8061427491 - 2⁶ = 8061427427 is a prime.

It is a super-2 number, since 2×8061427491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8061427499) 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, 401971 + ... + 421548.

It is an arithmetic number, because the mean of its divisors is an integer number (726344640).

Almost surely, 2^8061427491 is an apocalyptic number.

8061427491 is a deficient number, since it is larger than the sum of its proper divisors (3560086749).

8061427491 is a wasteful number, since it uses less digits than its factorization.

8061427491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823786.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8061427491 is about 89785.4525577501. The cubic root of 8061427491 is about 2005.1059113254.

The spelling of 8061427491 in words is "eight billion, sixty-one million, four hundred twenty-seven thousand, four hundred ninety-one".