1217142824957 has 8 divisors (see below), whose sum is σ = 1271250188160. Its totient is φ = 1163134470960.

The previous prime is 1217142824941. The next prime is 1217142824969. The reversal of 1217142824957 is 7594282417121.

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 1217142824957 - 2⁴ = 1217142824941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1217142824899 and 1217142824908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217142824987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24727169 + ... + 24776342.

It is an arithmetic number, because the mean of its divisors is an integer number (158906273520).

Almost surely, 2^{1217142824957} is an apocalyptic number.

It is an amenable number.

1217142824957 is a deficient number, since it is larger than the sum of its proper divisors (54107363203).

1217142824957 is a wasteful number, since it uses less digits than its factorization.

1217142824957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49504603.

The product of its digits is 2257920, while the sum is 53.

The spelling of 1217142824957 in words is "one trillion, two hundred seventeen billion, one hundred forty-two million, eight hundred twenty-four thousand, nine hundred fifty-seven".