2724455821378 has 4 divisors (see below), whose sum is σ = 4086683732070. Its totient is φ = 1362227910688.

The previous prime is 2724455821289. The next prime is 2724455821453. The reversal of 2724455821378 is 8731285544272.

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., 2571157731289 + 153298090089 = 1603483^2 + 391533^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681113955343 + ... + 681113955346.

Almost surely, 2^{2724455821378} is an apocalyptic number.

2724455821378 is a deficient number, since it is larger than the sum of its proper divisors (1362227910692).

2724455821378 is a wasteful number, since it uses less digits than its factorization.

2724455821378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362227910691.

The product of its digits is 30105600, while the sum is 58.

The spelling of 2724455821378 in words is "two trillion, seven hundred twenty-four billion, four hundred fifty-five million, eight hundred twenty-one thousand, three hundred seventy-eight".