378221245959 has 4 divisors (see below), whose sum is σ = 504294994616. Its totient is φ = 252147497304.

The previous prime is 378221245957. The next prime is 378221245993. The reversal of 378221245959 is 959542122873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959542122873 = 3 ⋅319847374291.

It is not a de Polignac number, because 378221245959 - 2¹ = 378221245957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378221245899 and 378221245908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378221245951) 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, 63036874324 + ... + 63036874329.

It is an arithmetic number, because the mean of its divisors is an integer number (126073748654).

Almost surely, 2^378221245959 is an apocalyptic number.

378221245959 is a deficient number, since it is larger than the sum of its proper divisors (126073748657).

378221245959 is a wasteful number, since it uses less digits than its factorization.

378221245959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126073748656.

The product of its digits is 10886400, while the sum is 57.

The spelling of 378221245959 in words is "three hundred seventy-eight billion, two hundred twenty-one million, two hundred forty-five thousand, nine hundred fifty-nine".