772226137661 has 8 divisors (see below), whose sum is σ = 843109554144. Its totient is φ = 701456227920.

The previous prime is 772226137637. The next prime is 772226137673. The reversal of 772226137661 is 166731622277.

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

It is a cyclic number.

It is not a de Polignac number, because 772226137661 - 2⁶ = 772226137597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772226137681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28362455 + ... + 28389668.

It is an arithmetic number, because the mean of its divisors is an integer number (105388694268).

Almost surely, 2^772226137661 is an apocalyptic number.

It is an amenable number.

772226137661 is a deficient number, since it is larger than the sum of its proper divisors (70883416483).

772226137661 is a wasteful number, since it uses less digits than its factorization.

772226137661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56753371.

The product of its digits is 1778112, while the sum is 50.

The spelling of 772226137661 in words is "seven hundred seventy-two billion, two hundred twenty-six million, one hundred thirty-seven thousand, six hundred sixty-one".