8061912391 has 16 divisors (see below), whose sum is σ = 9063885600. Its totient is φ = 7119197568.

The previous prime is 8061912371. The next prime is 8061912427. The reversal of 8061912391 is 1932191608.

It is a cyclic number.

It is not a de Polignac number, because 8061912391 - 2¹³ = 8061904199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8061912301) 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, 57001 + ... + 139186.

It is an arithmetic number, because the mean of its divisors is an integer number (566492850).

Almost surely, 2^8061912391 is an apocalyptic number.

8061912391 is a deficient number, since it is larger than the sum of its proper divisors (1001973209).

8061912391 is a wasteful number, since it uses less digits than its factorization.

8061912391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196338.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 8061912391 is about 89788.1528432343. The cubic root of 8061912391 is about 2005.1461133187.

The spelling of 8061912391 in words is "eight billion, sixty-one million, nine hundred twelve thousand, three hundred ninety-one".