66260465961 has 8 divisors (see below), whose sum is σ = 89411713440. Its totient is φ = 43641431232.

The previous prime is 66260465959. The next prime is 66260466011. The reversal of 66260465961 is 16956406266.

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

It is not a de Polignac number, because 66260465961 - 2¹ = 66260465959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66260464961) 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, 133052896 + ... + 133053393.

It is an arithmetic number, because the mean of its divisors is an integer number (11176464180).

Almost surely, 2^66260465961 is an apocalyptic number.

It is an amenable number.

66260465961 is a deficient number, since it is larger than the sum of its proper divisors (23151247479).

66260465961 is a wasteful number, since it uses less digits than its factorization.

66260465961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266106375.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 66260465961 in words is "sixty-six billion, two hundred sixty million, four hundred sixty-five thousand, nine hundred sixty-one".