1217410164556 has 24 divisors (see below), whose sum is σ = 2210717988864. Its totient is φ = 586175212560.

The previous prime is 1217410164547. The next prime is 1217410164589. The reversal of 1217410164556 is 6554610147121.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49832620 + ... + 49857043.

It is an arithmetic number, because the mean of its divisors is an integer number (92113249536).

Almost surely, 2^{1217410164556} is an apocalyptic number.

It is an amenable number.

1217410164556 is a deficient number, since it is larger than the sum of its proper divisors (993307824308).

1217410164556 is a wasteful number, since it uses less digits than its factorization.

1217410164556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99689781 (or 99689779 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1217410164556 in words is "one trillion, two hundred seventeen billion, four hundred ten million, one hundred sixty-four thousand, five hundred fifty-six".