1331407281952 has 48 divisors (see below), whose sum is σ = 2866491482400. Its totient is φ = 603705392640.

The previous prime is 1331407281947. The next prime is 1331407281961. The reversal of 1331407281952 is 2591827041331.

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 7 ways as a sum of consecutive naturals, for example, 4480002 + ... + 4767937.

It is an arithmetic number, because the mean of its divisors is an integer number (59718572550).

Almost surely, 2^{1331407281952} is an apocalyptic number.

It is an amenable number.

1331407281952 is an abundant number, since it is smaller than the sum of its proper divisors (1535084200448).

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

1331407281952 is a wasteful number, since it uses less digits than its factorization.

1331407281952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248369 (or 9248361 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 1331407281952 in words is "one trillion, three hundred thirty-one billion, four hundred seven million, two hundred eighty-one thousand, nine hundred fifty-two".