770941261161 has 16 divisors (see below), whose sum is σ = 1142174080320. Its totient is φ = 513943345440.

The previous prime is 770941261157. The next prime is 770941261193. The reversal of 770941261161 is 161162149077.

770941261161 is a `hidden beast` number, since 7 + 70 + 9 + 412 + 6 + 1 + 161 = 666.

It is not a de Polignac number, because 770941261161 - 2² = 770941261157 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (770941261121) 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, 347901 + ... + 1289541.

It is an arithmetic number, because the mean of its divisors is an integer number (71385880020).

Almost surely, 2^770941261161 is an apocalyptic number.

It is an amenable number.

770941261161 is a deficient number, since it is larger than the sum of its proper divisors (371232819159).

770941261161 is a wasteful number, since it uses less digits than its factorization.

770941261161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971973 (or 971967 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 770941261161 in words is "seven hundred seventy billion, nine hundred forty-one million, two hundred sixty-one thousand, one hundred sixty-one".