64718241247 has 8 divisors (see below), whose sum is σ = 70633221120. Its totient is φ = 58808511960.

The previous prime is 64718241221. The next prime is 64718241253. The reversal of 64718241247 is 74214281746.

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

It is a de Polignac number, because none of the positive numbers 2^k-64718241247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64718241197 and 64718241206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64718241347) 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, 1286847 + ... + 1336192.

It is an arithmetic number, because the mean of its divisors is an integer number (8829152640).

Almost surely, 2^64718241247 is an apocalyptic number.

64718241247 is a deficient number, since it is larger than the sum of its proper divisors (5914979873).

64718241247 is a wasteful number, since it uses less digits than its factorization.

64718241247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625293.

The product of its digits is 602112, while the sum is 46.

The spelling of 64718241247 in words is "sixty-four billion, seven hundred eighteen million, two hundred forty-one thousand, two hundred forty-seven".