1274124346645 has 4 divisors (see below), whose sum is σ = 1528949215980. Its totient is φ = 1019299477312.

The previous prime is 1274124346571. The next prime is 1274124346697. The reversal of 1274124346645 is 5466434214721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 293442140209 + 980682206436 = 541703^2 + 990294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274124346645 - 2²⁹ = 1273587475733 is a prime.

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, 127412434660 + ... + 127412434669.

It is an arithmetic number, because the mean of its divisors is an integer number (382237303995).

Almost surely, 2^{1274124346645} is an apocalyptic number.

It is an amenable number.

1274124346645 is a deficient number, since it is larger than the sum of its proper divisors (254824869335).

1274124346645 is an equidigital number, since it uses as much as digits as its factorization.

1274124346645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254824869334.

The product of its digits is 3870720, while the sum is 49.

The spelling of 1274124346645 in words is "one trillion, two hundred seventy-four billion, one hundred twenty-four million, three hundred forty-six thousand, six hundred forty-five".