64451291161 has 8 divisors (see below), whose sum is σ = 68075017920. Its totient is φ = 60850719792.

The previous prime is 64451291147. The next prime is 64451291207. The reversal of 64451291161 is 16119215446.

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 64451291161 - 2⁵ = 64451291129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64451292161) 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, 5783125 + ... + 5794258.

It is an arithmetic number, because the mean of its divisors is an integer number (8509377240).

Almost surely, 2^64451291161 is an apocalyptic number.

It is an amenable number.

64451291161 is a deficient number, since it is larger than the sum of its proper divisors (3623726759).

64451291161 is a wasteful number, since it uses less digits than its factorization.

64451291161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11577695.

The product of its digits is 51840, while the sum is 40.

The spelling of 64451291161 in words is "sixty-four billion, four hundred fifty-one million, two hundred ninety-one thousand, one hundred sixty-one".