64243634246 has 24 divisors (see below), whose sum is σ = 106476999552. Its totient is φ = 29048742800.

The previous prime is 64243634239. The next prime is 64243634291.

64243634246 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64243634246² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64243634197 and 64243634206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648725 + ... + 741168.

It is an arithmetic number, because the mean of its divisors is an integer number (4436541648).

Almost surely, 2^64243634246 is an apocalyptic number.

64243634246 is a deficient number, since it is larger than the sum of its proper divisors (42233365306).

64243634246 is a wasteful number, since it uses less digits than its factorization.

64243634246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390108 (or 1390097 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 44.

The spelling of 64243634246 in words is "sixty-four billion, two hundred forty-three million, six hundred thirty-four thousand, two hundred forty-six".