61122766345 has 4 divisors (see below), whose sum is σ = 73347319620. Its totient is φ = 48898213072.

The previous prime is 61122766261. The next prime is 61122766351. The reversal of 61122766345 is 54366722116.

61122766345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45715998969 + 15406767376 = 213813^2 + 124124^2 .

It is a cyclic number.

It is not a de Polignac number, because 61122766345 - 2⁷ = 61122766217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6112276630 + ... + 6112276639.

It is an arithmetic number, because the mean of its divisors is an integer number (18336829905).

Almost surely, 2^61122766345 is an apocalyptic number.

It is an amenable number.

61122766345 is a deficient number, since it is larger than the sum of its proper divisors (12224553275).

61122766345 is a wasteful number, since it uses less digits than its factorization.

61122766345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224553274.

The product of its digits is 362880, while the sum is 43.

The spelling of 61122766345 in words is "sixty-one billion, one hundred twenty-two million, seven hundred sixty-six thousand, three hundred forty-five".