258724223138 has 8 divisors (see below), whose sum is σ = 388129854288. Its totient is φ = 129347605044.

The previous prime is 258724223137. The next prime is 258724223161. The reversal of 258724223138 is 831322427852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×258724223138² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 258724223092 and 258724223101.

It is not an unprimeable number, because it can be changed into a prime (258724223137) 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, 7230956 + ... + 7266647.

It is an arithmetic number, because the mean of its divisors is an integer number (48516231786).

Almost surely, 2^258724223138 is an apocalyptic number.

258724223138 is a deficient number, since it is larger than the sum of its proper divisors (129405631150).

258724223138 is a wasteful number, since it uses less digits than its factorization.

258724223138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14506528.

The product of its digits is 1290240, while the sum is 47.

The spelling of 258724223138 in words is "two hundred fifty-eight billion, seven hundred twenty-four million, two hundred twenty-three thousand, one hundred thirty-eight".