771161277160 has 128 divisors (see below), whose sum is σ = 1877758387200. Its totient is φ = 284034263040.

The previous prime is 771161277079. The next prime is 771161277193. The reversal of 771161277160 is 61772161177.

It is a self number, because there is not a number n which added to its sum of digits gives 771161277160.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27853084 + ... + 27880756.

It is an arithmetic number, because the mean of its divisors is an integer number (14669987400).

Almost surely, 2^771161277160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 771161277160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938879193600).

771161277160 is an abundant number, since it is smaller than the sum of its proper divisors (1106597110040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771161277160 is a wasteful number, since it uses less digits than its factorization.

771161277160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28731 (or 28727 counting only the distinct ones).

The product of its (nonzero) digits is 172872, while the sum is 46.

The spelling of 771161277160 in words is "seven hundred seventy-one billion, one hundred sixty-one million, two hundred seventy-seven thousand, one hundred sixty".