2643440337442 has 8 divisors (see below), whose sum is σ = 3996382242816. Its totient is φ = 1311312923172.

The previous prime is 2643440337427. The next prime is 2643440337443. The reversal of 2643440337442 is 2447330443462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2643440337392 and 2643440337401.

It is not an unprimeable number, because it can be changed into a prime (2643440337443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5203622458 + ... + 5203622965.

It is an arithmetic number, because the mean of its divisors is an integer number (499547780352).

Almost surely, 2^{2643440337442} is an apocalyptic number.

2643440337442 is a deficient number, since it is larger than the sum of its proper divisors (1352941905374).

2643440337442 is a wasteful number, since it uses less digits than its factorization.

2643440337442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407245552.

The product of its (nonzero) digits is 4644864, while the sum is 46.

The spelling of 2643440337442 in words is "two trillion, six hundred forty-three billion, four hundred forty million, three hundred thirty-seven thousand, four hundred forty-two".