258198194728212 has 36 divisors (see below), whose sum is σ = 629795344560480. Its totient is φ = 82324062085232.

The previous prime is 258198194728211. The next prime is 258198194728289. The reversal of 258198194728212 is 212827491891852.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258198194728211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20336965512 + ... + 20336978207.

It is an arithmetic number, because the mean of its divisors is an integer number (17494315126680).

Almost surely, 2^{258198194728212} is an apocalyptic number.

It is an amenable number.

258198194728212 is an abundant number, since it is smaller than the sum of its proper divisors (371597149832268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258198194728212 is a wasteful number, since it uses less digits than its factorization.

258198194728212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40673943772 (or 40673943747 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 69.

The spelling of 258198194728212 in words is "two hundred fifty-eight trillion, one hundred ninety-eight billion, one hundred ninety-four million, seven hundred twenty-eight thousand, two hundred twelve".