1321652610443 has 32 divisors (see below), whose sum is σ = 1481132749824. Its totient is φ = 1168896960000.

The previous prime is 1321652610419. The next prime is 1321652610449. The reversal of 1321652610443 is 3440162561231.

It is not a de Polignac number, because 1321652610443 - 2¹⁸ = 1321652348299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321652610397 and 1321652610406.

It is not an unprimeable number, because it can be changed into a prime (1321652610449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524256023 + ... + 524258543.

It is an arithmetic number, because the mean of its divisors is an integer number (46285398432).

Almost surely, 2^{1321652610443} is an apocalyptic number.

1321652610443 is a deficient number, since it is larger than the sum of its proper divisors (159480139381).

1321652610443 is a wasteful number, since it uses less digits than its factorization.

1321652610443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1321652610443 in words is "one trillion, three hundred twenty-one billion, six hundred fifty-two million, six hundred ten thousand, four hundred forty-three".