1351606399872 has 128 divisors (see below), whose sum is σ = 3882274583040. Its totient is φ = 415011299328.

The previous prime is 1351606399867. The next prime is 1351606399901. The reversal of 1351606399872 is 2789936061531.

It is a tau number, because it is divible by the number of its divisors (128).

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 in 15 ways as a sum of consecutive naturals, for example, 1895818 + ... + 2509449.

It is an arithmetic number, because the mean of its divisors is an integer number (30330270180).

Almost surely, 2^{1351606399872} is an apocalyptic number.

1351606399872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1351606399872 is an abundant number, since it is smaller than the sum of its proper divisors (2530668183168).

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

1351606399872 is a wasteful number, since it uses less digits than its factorization.

1351606399872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405348 (or 4405336 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 1351606399872 in words is "one trillion, three hundred fifty-one billion, six hundred six million, three hundred ninety-nine thousand, eight hundred seventy-two".