1321652610397 has 12 divisors (see below), whose sum is σ = 1537454377056. Its totient is φ = 1132829069400.

The previous prime is 1321652610389. The next prime is 1321652610407. The reversal of 1321652610397 is 7930162561231.

It is not a de Polignac number, because 1321652610397 - 2³ = 1321652610389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321652610497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4447522 + ... + 4735372.

It is an arithmetic number, because the mean of its divisors is an integer number (128121198088).

Almost surely, 2^{1321652610397} is an apocalyptic number.

It is an amenable number.

1321652610397 is a deficient number, since it is larger than the sum of its proper divisors (215801766659).

1321652610397 is an equidigital number, since it uses as much as digits as its factorization.

1321652610397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381568 (or 381561 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 1321652610397 in words is "one trillion, three hundred twenty-one billion, six hundred fifty-two million, six hundred ten thousand, three hundred ninety-seven".