1217132674477 has 4 divisors (see below), whose sum is σ = 1217966899840. Its totient is φ = 1216298449116.

The previous prime is 1217132674463. The next prime is 1217132674489. The reversal of 1217132674477 is 7744762317121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1217132674477 - 2¹¹ = 1217132672429 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 (1217132674427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417110493 + ... + 417113410.

It is an arithmetic number, because the mean of its divisors is an integer number (304491724960).

Almost surely, 2^{1217132674477} is an apocalyptic number.

It is an amenable number.

1217132674477 is a deficient number, since it is larger than the sum of its proper divisors (834225363).

1217132674477 is an equidigital number, since it uses as much as digits as its factorization.

1217132674477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834225362.

The product of its digits is 2765952, while the sum is 52.

The spelling of 1217132674477 in words is "one trillion, two hundred seventeen billion, one hundred thirty-two million, six hundred seventy-four thousand, four hundred seventy-seven".