1217397088908 has 288 divisors, whose sum is σ = 4134575757312. Its totient is φ = 291685363200.

The previous prime is 1217397088879. The next prime is 1217397088913. The reversal of 1217397088908 is 8098807937121.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57034318 + ... + 57055658.

It is an arithmetic number, because the mean of its divisors is an integer number (14356165824).

Almost surely, 2^{1217397088908} is an apocalyptic number.

1217397088908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217397088908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2067287878656).

1217397088908 is an abundant number, since it is smaller than the sum of its proper divisors (2917178668404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217397088908 is a wasteful number, since it uses less digits than its factorization.

1217397088908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22965 (or 22960 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The spelling of 1217397088908 in words is "one trillion, two hundred seventeen billion, three hundred ninety-seven million, eighty-eight thousand, nine hundred eight".