258149818991 has 8 divisors (see below), whose sum is σ = 263671619760. Its totient is φ = 252677101248.

The previous prime is 258149818943. The next prime is 258149819051. The reversal of 258149818991 is 199818941852.

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

It is a cyclic number.

It is not a de Polignac number, because 258149818991 - 2²² = 258145624687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258149818931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12260126 + ... + 12281163.

It is an arithmetic number, because the mean of its divisors is an integer number (32958952470).

Almost surely, 2^258149818991 is an apocalyptic number.

258149818991 is a deficient number, since it is larger than the sum of its proper divisors (5521800769).

258149818991 is a wasteful number, since it uses less digits than its factorization.

258149818991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24541513.

The product of its digits is 14929920, while the sum is 65.

The spelling of 258149818991 in words is "two hundred fifty-eight billion, one hundred forty-nine million, eight hundred eighteen thousand, nine hundred ninety-one".