378267897523 has 4 divisors (see below), whose sum is σ = 384679217880. Its totient is φ = 371856577168.

The previous prime is 378267897467. The next prime is 378267897589. The reversal of 378267897523 is 325798762873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378267897523 - 2¹⁷ = 378267766451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378267891523) 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, 3205660090 + ... + 3205660207.

It is an arithmetic number, because the mean of its divisors is an integer number (96169804470).

Almost surely, 2^378267897523 is an apocalyptic number.

378267897523 is a deficient number, since it is larger than the sum of its proper divisors (6411320357).

378267897523 is an equidigital number, since it uses as much as digits as its factorization.

378267897523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411320356.

The product of its digits is 213373440, while the sum is 67.

The spelling of 378267897523 in words is "three hundred seventy-eight billion, two hundred sixty-seven million, eight hundred ninety-seven thousand, five hundred twenty-three".