258423778323 has 16 divisors (see below), whose sum is σ = 383738342400. Its totient is φ = 171882783720.

The previous prime is 258423778307. The next prime is 258423778357. The reversal of 258423778323 is 323877324852.

258423778323 is a `hidden beast` number, since 2 + 5 + 84 + 237 + 7 + 8 + 323 = 666.

It is not a de Polignac number, because 258423778323 - 2⁴ = 258423778307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258423778323.

It is not an unprimeable number, because it can be changed into a prime (258423776323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11091903 + ... + 11115176.

It is an arithmetic number, because the mean of its divisors is an integer number (23983646400).

Almost surely, 2^258423778323 is an apocalyptic number.

258423778323 is a deficient number, since it is larger than the sum of its proper divisors (125314564077).

258423778323 is a wasteful number, since it uses less digits than its factorization.

258423778323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22207519 (or 22207513 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The spelling of 258423778323 in words is "two hundred fifty-eight billion, four hundred twenty-three million, seven hundred seventy-eight thousand, three hundred twenty-three".