813702143618 has 64 divisors (see below), whose sum is σ = 1514336893440. Its totient is φ = 319313664000.

The previous prime is 813702143563. The next prime is 813702143651. The reversal of 813702143618 is 816341207318.

It is a super-2 number, since 2×813702143618² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19463858 + ... + 19505618.

It is an arithmetic number, because the mean of its divisors is an integer number (23661513960).

Almost surely, 2^813702143618 is an apocalyptic number.

813702143618 is a deficient number, since it is larger than the sum of its proper divisors (700634749822).

813702143618 is a wasteful number, since it uses less digits than its factorization.

813702143618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42643.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 813702143618 in words is "eight hundred thirteen billion, seven hundred two million, one hundred forty-three thousand, six hundred eighteen".