65250260561 has 8 divisors (see below), whose sum is σ = 65663441760. Its totient is φ = 64837236672.

The previous prime is 65250260519. The next prime is 65250260597. The reversal of 65250260561 is 16506205256.

It is a happy number.

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-65250260561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65250260501) 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, 857225 + ... + 930233.

It is an arithmetic number, because the mean of its divisors is an integer number (8207930220).

Almost surely, 2^65250260561 is an apocalyptic number.

It is an amenable number.

65250260561 is a deficient number, since it is larger than the sum of its proper divisors (413181199).

65250260561 is a wasteful number, since it uses less digits than its factorization.

65250260561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78655.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 65250260561 in words is "sixty-five billion, two hundred fifty million, two hundred sixty thousand, five hundred sixty-one".