1231153705464 has 64 divisors (see below), whose sum is σ = 3161375450400. Its totient is φ = 399254552064.

The previous prime is 1231153705423. The next prime is 1231153705513. The reversal of 1231153705464 is 4645073511321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9988242 + ... + 10110750.

Almost surely, 2^{1231153705464} is an apocalyptic number.

It is an amenable number.

1231153705464 is an abundant number, since it is smaller than the sum of its proper divisors (1930221744936).

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

1231153705464 is a wasteful number, since it uses less digits than its factorization.

1231153705464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133872 (or 133868 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 1231153705464 in words is "one trillion, two hundred thirty-one billion, one hundred fifty-three million, seven hundred five thousand, four hundred sixty-four".