123271455512 has 8 divisors (see below), whose sum is σ = 231133979100. Its totient is φ = 61635727752.

The previous prime is 123271455491. The next prime is 123271455529. The reversal of 123271455512 is 215554172321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×123271455512³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7704465962 + ... + 7704465977.

Almost surely, 2^123271455512 is an apocalyptic number.

It is an amenable number.

123271455512 is a deficient number, since it is larger than the sum of its proper divisors (107862523588).

123271455512 is a wasteful number, since it uses less digits than its factorization.

123271455512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15408931945 (or 15408931941 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

The spelling of 123271455512 in words is "one hundred twenty-three billion, two hundred seventy-one million, four hundred fifty-five thousand, five hundred twelve".