7131818318964 has 24 divisors (see below), whose sum is σ = 16805670893088. Its totient is φ = 2353735418400.

The previous prime is 7131818318887. The next prime is 7131818318969. The reversal of 7131818318964 is 4698138181317.

It is a junction number, because it is equal to n+sod(n) for n = 7131818318898 and 7131818318907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131818318969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2942168062 + ... + 2942170485.

It is an arithmetic number, because the mean of its divisors is an integer number (700236287212).

Almost surely, 2^{7131818318964} is an apocalyptic number.

It is an amenable number.

7131818318964 is an abundant number, since it is smaller than the sum of its proper divisors (9673852574124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7131818318964 is a wasteful number, since it uses less digits than its factorization.

7131818318964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884338655 (or 5884338653 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The spelling of 7131818318964 in words is "seven trillion, one hundred thirty-one billion, eight hundred eighteen million, three hundred eighteen thousand, nine hundred sixty-four".