8151387791 has 8 divisors (see below), whose sum is σ = 8199664704. Its totient is φ = 8103180960.

The previous prime is 8151387787. The next prime is 8151387799. The reversal of 8151387791 is 1977831518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8151387791 - 2² = 8151387787 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 (8151387799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225701 + ... + 259313.

It is an arithmetic number, because the mean of its divisors is an integer number (1024958088).

Almost surely, 2^8151387791 is an apocalyptic number.

8151387791 is a deficient number, since it is larger than the sum of its proper divisors (48276913).

8151387791 is a wasteful number, since it uses less digits than its factorization.

8151387791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35041.

The product of its digits is 423360, while the sum is 50.

The square root of 8151387791 is about 90285.0363626221. The cubic root of 8151387791 is about 2012.5368981365.

The spelling of 8151387791 in words is "eight billion, one hundred fifty-one million, three hundred eighty-seven thousand, seven hundred ninety-one".