12958193556 has 72 divisors (see below), whose sum is σ = 40837952064. Its totient is φ = 3365763840.

The previous prime is 12958193503. The next prime is 12958193557. The reversal of 12958193556 is 65539185921.

12958193556 is a `hidden beast` number, since 1 + 2 + 9 + 5 + 81 + 9 + 3 + 556 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12958193557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2334565 + ... + 2340108.

Almost surely, 2^12958193556 is an apocalyptic number.

It is an amenable number.

12958193556 is an abundant number, since it is smaller than the sum of its proper divisors (27879758508).

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

12958193556 is a wasteful number, since it uses less digits than its factorization.

12958193556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674701 (or 4674696 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The spelling of 12958193556 in words is "twelve billion, nine hundred fifty-eight million, one hundred ninety-three thousand, five hundred fifty-six".