64241855091 has 6 divisors (see below), whose sum is σ = 92793790700. Its totient is φ = 42827903388.

The previous prime is 64241855087. The next prime is 64241855189. The reversal of 64241855091 is 19055814246.

64241855091 is a `hidden beast` number, since 6 + 4 + 2 + 4 + 1 + 8 + 550 + 91 = 666.

It is not a de Polignac number, because 64241855091 - 2² = 64241855087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64241855021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3568991941 + ... + 3568991958.

Almost surely, 2^64241855091 is an apocalyptic number.

64241855091 is a deficient number, since it is larger than the sum of its proper divisors (28551935609).

64241855091 is a wasteful number, since it uses less digits than its factorization.

64241855091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137983905 (or 7137983902 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 64241855091 in words is "sixty-four billion, two hundred forty-one million, eight hundred fifty-five thousand, ninety-one".