64273037245 has 8 divisors (see below), whose sum is σ = 78184188216. Its totient is φ = 50714067456.

The previous prime is 64273037239. The next prime is 64273037281. The reversal of 64273037245 is 54273037246.

It can be written as a sum of positive squares in 4 ways, for example, as 8021530969 + 56251506276 = 89563^2 + 237174^2 .

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 64273037245 - 2⁷ = 64273037117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88044892 + ... + 88045621.

It is an arithmetic number, because the mean of its divisors is an integer number (9773023527).

Almost surely, 2^64273037245 is an apocalyptic number.

It is an amenable number.

64273037245 is a deficient number, since it is larger than the sum of its proper divisors (13911150971).

64273037245 is a wasteful number, since it uses less digits than its factorization.

64273037245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176090591.

The product of its (nonzero) digits is 846720, while the sum is 43.

Subtracting from 64273037245 its reverse (54273037246), we obtain a palindrome (9999999999).

The spelling of 64273037245 in words is "sixty-four billion, two hundred seventy-three million, thirty-seven thousand, two hundred forty-five".