1329490957555 has 8 divisors (see below), whose sum is σ = 1599736260672. Its totient is φ = 1060694691648.

The previous prime is 1329490957549. The next prime is 1329490957579. The reversal of 1329490957555 is 5557590949231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1329490957555 - 2¹⁷ = 1329490826483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362257282 + ... + 362260951.

It is an arithmetic number, because the mean of its divisors is an integer number (199967032584).

Almost surely, 2^{1329490957555} is an apocalyptic number.

1329490957555 is a deficient number, since it is larger than the sum of its proper divisors (270245303117).

1329490957555 is an equidigital number, since it uses as much as digits as its factorization.

1329490957555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724518605.

The product of its (nonzero) digits is 76545000, while the sum is 64.

The spelling of 1329490957555 in words is "one trillion, three hundred twenty-nine billion, four hundred ninety million, nine hundred fifty-seven thousand, five hundred fifty-five".