7161396777 has 12 divisors (see below), whose sum is σ = 10425692160. Its totient is φ = 4736671128.

The previous prime is 7161396763. The next prime is 7161396821. The reversal of 7161396777 is 7776931617.

7161396777 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7161396777 - 2⁶ = 7161396713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7161396877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3131577 + ... + 3133862.

It is an arithmetic number, because the mean of its divisors is an integer number (868807680).

Almost surely, 2^7161396777 is an apocalyptic number.

It is an amenable number.

7161396777 is a deficient number, since it is larger than the sum of its proper divisors (3264295383).

7161396777 is a wasteful number, since it uses less digits than its factorization.

7161396777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265572 (or 6265569 counting only the distinct ones).

The product of its digits is 2333772, while the sum is 54.

The square root of 7161396777 is about 84625.0363485889. The cubic root of 7161396777 is about 1927.5215644557.

The spelling of 7161396777 in words is "seven billion, one hundred sixty-one million, three hundred ninety-six thousand, seven hundred seventy-seven".