2391838857216 has 288 divisors, whose sum is σ = 7221221280000. Its totient is φ = 761261309952.

The previous prime is 2391838857211. The next prime is 2391838857281. The reversal of 2391838857216 is 6127588381932.

2391838857216 is a `hidden beast` number, since 2 + 3 + 9 + 18 + 38 + 8 + 572 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391838857211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253932955 + ... + 253942373.

It is an arithmetic number, because the mean of its divisors is an integer number (25073685000).

Almost surely, 2^{2391838857216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2391838857216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3610610640000).

2391838857216 is an abundant number, since it is smaller than the sum of its proper divisors (4829382422784).

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

2391838857216 is a wasteful number, since it uses less digits than its factorization.

2391838857216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10069 (or 10046 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 2391838857216 in words is "two trillion, three hundred ninety-one billion, eight hundred thirty-eight million, eight hundred fifty-seven thousand, two hundred sixteen".