258749113478 has 4 divisors (see below), whose sum is σ = 388123670220. Its totient is φ = 129374556738.

The previous prime is 258749113477. The next prime is 258749113487. The reversal of 258749113478 is 874311947852.

It is a happy number.

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

It is a super-2 number, since 2×258749113478² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258749113477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64687278368 + ... + 64687278371.

It is an arithmetic number, because the mean of its divisors is an integer number (97030917555).

Almost surely, 2^258749113478 is an apocalyptic number.

258749113478 is a deficient number, since it is larger than the sum of its proper divisors (129374556742).

258749113478 is a wasteful number, since it uses less digits than its factorization.

258749113478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129374556741.

The product of its digits is 13547520, while the sum is 59.

The spelling of 258749113478 in words is "two hundred fifty-eight billion, seven hundred forty-nine million, one hundred thirteen thousand, four hundred seventy-eight".