7761121266 has 8 divisors (see below), whose sum is σ = 15522242544. Its totient is φ = 2587040420.

The previous prime is 7761121261. The next prime is 7761121297. The reversal of 7761121266 is 6621211677.

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

7761121266 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7761121261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646760100 + ... + 646760111.

It is an arithmetic number, because the mean of its divisors is an integer number (1940280318).

Almost surely, 2^7761121266 is an apocalyptic number.

7761121266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7761121266 is a wasteful number, since it uses less digits than its factorization.

7761121266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293520216.

The product of its digits is 42336, while the sum is 39.

The square root of 7761121266 is about 88097.2262105908. The cubic root of 7761121266 is about 1979.8919495164.

The spelling of 7761121266 in words is "seven billion, seven hundred sixty-one million, one hundred twenty-one thousand, two hundred sixty-six".