64201683442 has 12 divisors (see below), whose sum is σ = 104280249690. Its totient is φ = 29631546048.

The previous prime is 64201683419. The next prime is 64201683467. The reversal of 64201683442 is 24438610246.

It can be written as a sum of positive squares in 3 ways, for example, as 11526384321 + 52675299121 = 107361^2 + 229511^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64201683395 and 64201683404.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94972567 + ... + 94973242.

Almost surely, 2^64201683442 is an apocalyptic number.

64201683442 is a deficient number, since it is larger than the sum of its proper divisors (40078566248).

64201683442 is a wasteful number, since it uses less digits than its factorization.

64201683442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189945837 (or 189945824 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 64201683442 in words is "sixty-four billion, two hundred one million, six hundred eighty-three thousand, four hundred forty-two".