6413748725018 has 4 divisors (see below), whose sum is σ = 9620623087530. Its totient is φ = 3206874362508.

The previous prime is 6413748724997. The next prime is 6413748725023. The reversal of 6413748725018 is 8105278473146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6412781328409 + 967396609 = 2532347^2 + 31103^2 .

It is a super-2 number, since 2×6413748725018² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603437181253 + ... + 1603437181256.

Almost surely, 2^{6413748725018} is an apocalyptic number.

6413748725018 is a deficient number, since it is larger than the sum of its proper divisors (3206874362512).

6413748725018 is a wasteful number, since it uses less digits than its factorization.

6413748725018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206874362511.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 6413748725018 in words is "six trillion, four hundred thirteen billion, seven hundred forty-eight million, seven hundred twenty-five thousand, eighteen".