264722051245661 has 8 divisors (see below), whose sum is σ = 265950476423424. Its totient is φ = 263496453284800.

The previous prime is 264722051245637. The next prime is 264722051245699. The reversal of 264722051245661 is 166542150227462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264722051245661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264722051245261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706616525 + ... + 706991058.

It is an arithmetic number, because the mean of its divisors is an integer number (33243809552928).

Almost surely, 2^{264722051245661} is an apocalyptic number.

It is an amenable number.

264722051245661 is a deficient number, since it is larger than the sum of its proper divisors (1228425177763).

264722051245661 is a wasteful number, since it uses less digits than its factorization.

264722051245661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413608451.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 264722051245661 in words is "two hundred sixty-four trillion, seven hundred twenty-two billion, fifty-one million, two hundred forty-five thousand, six hundred sixty-one".