2123698309824 has 224 divisors, whose sum is σ = 6918873127936. Its totient is φ = 559833845760.

The previous prime is 2123698309781. The next prime is 2123698309877. The reversal of 2123698309824 is 4289038963212.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×2123698309824² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38777949 + ... + 38832675.

It is an arithmetic number, because the mean of its divisors is an integer number (30887826464).

Almost surely, 2^{2123698309824} is an apocalyptic number.

2123698309824 is a gapful number since it is divisible by the number (24) 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 2123698309824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459436563968).

2123698309824 is an abundant number, since it is smaller than the sum of its proper divisors (4795174818112).

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

2123698309824 is a wasteful number, since it uses less digits than its factorization.

2123698309824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56983 (or 56973 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 2123698309824 in words is "two trillion, one hundred twenty-three billion, six hundred ninety-eight million, three hundred nine thousand, eight hundred twenty-four".