64341617157 has 12 divisors (see below), whose sum is σ = 97829359680. Its totient is φ = 40636810728.

The previous prime is 64341617141. The next prime is 64341617167. The reversal of 64341617157 is 75171614346.

It is a happy number.

64341617157 is a `hidden beast` number, since 6 + 434 + 1 + 61 + 7 + 157 = 666.

It is not a de Polignac number, because 64341617157 - 2⁴ = 64341617141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64341617167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188133213 + ... + 188133554.

It is an arithmetic number, because the mean of its divisors is an integer number (8152446640).

Almost surely, 2^64341617157 is an apocalyptic number.

It is an amenable number.

64341617157 is a deficient number, since it is larger than the sum of its proper divisors (33487742523).

64341617157 is a wasteful number, since it uses less digits than its factorization.

64341617157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376266792 (or 376266789 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 64341617157 in words is "sixty-four billion, three hundred forty-one million, six hundred seventeen thousand, one hundred fifty-seven".