2231918337648 has 80 divisors (see below), whose sum is σ = 6091814563200. Its totient is φ = 702196104960.

The previous prime is 2231918337637. The next prime is 2231918337689. The reversal of 2231918337648 is 8467338191322.

It is a super-3 number, since 3×2231918337648³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4303518 + ... + 4794173.

It is an arithmetic number, because the mean of its divisors is an integer number (76147682040).

Almost surely, 2^{2231918337648} is an apocalyptic number.

It is an amenable number.

2231918337648 is an abundant number, since it is smaller than the sum of its proper divisors (3859896225552).

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

2231918337648 is a wasteful number, since it uses less digits than its factorization.

2231918337648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097990 (or 9097984 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 2231918337648 in words is "two trillion, two hundred thirty-one billion, nine hundred eighteen million, three hundred thirty-seven thousand, six hundred forty-eight".