2117645123000 has 512 divisors, whose sum is σ = 5756534784000. Its totient is φ = 721949760000.

The previous prime is 2117645122993. The next prime is 2117645123017. The reversal of 2117645123000 is 3215467112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2038156481 + ... + 2038157519.

It is an arithmetic number, because the mean of its divisors is an integer number (11243232000).

Almost surely, 2^{2117645123000} is an apocalyptic number.

2117645123000 is a gapful number since it is divisible by the number (20) 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 2117645123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2878267392000).

2117645123000 is an abundant number, since it is smaller than the sum of its proper divisors (3638889661000).

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

2117645123000 is a wasteful number, since it uses less digits than its factorization.

2117645123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 2117645123000 in words is "two trillion, one hundred seventeen billion, six hundred forty-five million, one hundred twenty-three thousand".