378553929355873 has 4 divisors (see below), whose sum is σ = 383114820071088. Its totient is φ = 373993038640660.

The previous prime is 378553929355871. The next prime is 378553929355963.

378553929355873 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378553929355873 - 2¹ = 378553929355871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378553929355871) 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, 2280445357483 + ... + 2280445357648.

It is an arithmetic number, because the mean of its divisors is an integer number (95778705017772).

Almost surely, 2^{378553929355873} is an apocalyptic number.

It is an amenable number.

378553929355873 is a deficient number, since it is larger than the sum of its proper divisors (4560890715215).

378553929355873 is an equidigital number, since it uses as much as digits as its factorization.

378553929355873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560890715214.

The product of its digits is 25719120000, while the sum is 82.

The spelling of 378553929355873 in words is "three hundred seventy-eight trillion, five hundred fifty-three billion, nine hundred twenty-nine million, three hundred fifty-five thousand, eight hundred seventy-three".