61122766297 has 4 divisors (see below), whose sum is σ = 64718223156. Its totient is φ = 57527309440.

The previous prime is 61122766261. The next prime is 61122766351. The reversal of 61122766297 is 79266722116.

It is a happy number.

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 41088911616 + 20033854681 = 202704^2 + 141541^2 .

It is a cyclic number.

It is not a de Polignac number, because 61122766297 - 2⁷ = 61122766169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61122766297.

It is not an unprimeable number, because it can be changed into a prime (61122766217) 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, 1797728404 + ... + 1797728437.

It is an arithmetic number, because the mean of its divisors is an integer number (16179555789).

Almost surely, 2^61122766297 is an apocalyptic number.

It is an amenable number.

61122766297 is a deficient number, since it is larger than the sum of its proper divisors (3595456859).

61122766297 is a wasteful number, since it uses less digits than its factorization.

61122766297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595456858.

The product of its digits is 762048, while the sum is 49.

The spelling of 61122766297 in words is "sixty-one billion, one hundred twenty-two million, seven hundred sixty-six thousand, two hundred ninety-seven".