378853136643 has 32 divisors (see below), whose sum is σ = 509473923840. Its totient is φ = 250413166080.

The previous prime is 378853136639. The next prime is 378853136647. The reversal of 378853136643 is 346631358873.

It is an interprime number because it is at equal distance from previous prime (378853136639) and next prime (378853136647).

It is not a de Polignac number, because 378853136643 - 2² = 378853136639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378853136647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161418996 + ... + 161421342.

It is an arithmetic number, because the mean of its divisors is an integer number (15921060120).

Almost surely, 2^378853136643 is an apocalyptic number.

378853136643 is a deficient number, since it is larger than the sum of its proper divisors (130620787197).

378853136643 is a wasteful number, since it uses less digits than its factorization.

378853136643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507.

The product of its digits is 26127360, while the sum is 57.

The spelling of 378853136643 in words is "three hundred seventy-eight billion, eight hundred fifty-three million, one hundred thirty-six thousand, six hundred forty-three".