258451321261 has 16 divisors (see below), whose sum is σ = 310934364160. Its totient is φ = 209859796080.

The previous prime is 258451321253. The next prime is 258451321319. The reversal of 258451321261 is 162123154852.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 258451321261 - 2³ = 258451321253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258451321061) 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, 3749296 + ... + 3817606.

It is an arithmetic number, because the mean of its divisors is an integer number (19433397760).

Almost surely, 2^258451321261 is an apocalyptic number.

It is an amenable number.

258451321261 is a deficient number, since it is larger than the sum of its proper divisors (52483042899).

258451321261 is a wasteful number, since it uses less digits than its factorization.

258451321261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96784.

The product of its digits is 115200, while the sum is 40.

The spelling of 258451321261 in words is "two hundred fifty-eight billion, four hundred fifty-one million, three hundred twenty-one thousand, two hundred sixty-one".