1321362401545 has 32 divisors (see below), whose sum is σ = 1675142726400. Its totient is φ = 997826125824.

The previous prime is 1321362401509. The next prime is 1321362401609. The reversal of 1321362401545 is 5451042631231.

It is a cyclic number.

It is not a de Polignac number, because 1321362401545 - 2¹⁹ = 1321361877257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44217729 + ... + 44247601.

It is an arithmetic number, because the mean of its divisors is an integer number (52348210200).

Almost surely, 2^{1321362401545} is an apocalyptic number.

It is an amenable number.

1321362401545 is a deficient number, since it is larger than the sum of its proper divisors (353780324855).

1321362401545 is a wasteful number, since it uses less digits than its factorization.

1321362401545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31569.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1321362401545 in words is "one trillion, three hundred twenty-one billion, three hundred sixty-two million, four hundred one thousand, five hundred forty-five".