1345632643655 has 4 divisors (see below), whose sum is σ = 1614759172392. Its totient is φ = 1076506114920.

The previous prime is 1345632643633. The next prime is 1345632643711. The reversal of 1345632643655 is 5563462365431.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1345632643655 - 2⁶ = 1345632643591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345632643597 and 1345632643606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134563264361 + ... + 134563264370.

It is an arithmetic number, because the mean of its divisors is an integer number (403689793098).

Almost surely, 2^{1345632643655} is an apocalyptic number.

1345632643655 is a deficient number, since it is larger than the sum of its proper divisors (269126528737).

1345632643655 is an equidigital number, since it uses as much as digits as its factorization.

1345632643655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269126528736.

The product of its digits is 23328000, while the sum is 53.

The spelling of 1345632643655 in words is "one trillion, three hundred forty-five billion, six hundred thirty-two million, six hundred forty-three thousand, six hundred fifty-five".