1213705574755 has 4 divisors (see below), whose sum is σ = 1456446689712. Its totient is φ = 970964459800.

The previous prime is 1213705574729. The next prime is 1213705574789. The reversal of 1213705574755 is 5574755073121.

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

It is not a de Polignac number, because 1213705574755 - 2²⁹ = 1213168703843 is a prime.

It is a Duffinian 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, 121370557471 + ... + 121370557480.

It is an arithmetic number, because the mean of its divisors is an integer number (364111672428).

Almost surely, 2^{1213705574755} is an apocalyptic number.

1213705574755 is a deficient number, since it is larger than the sum of its proper divisors (242741114957).

1213705574755 is an equidigital number, since it uses as much as digits as its factorization.

1213705574755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242741114956.

The product of its (nonzero) digits is 5145000, while the sum is 52.

The spelling of 1213705574755 in words is "one trillion, two hundred thirteen billion, seven hundred five million, five hundred seventy-four thousand, seven hundred fifty-five".