23894391297280 has 216 divisors, whose sum is σ = 66767618677032. Its totient is φ = 8169147334656.

The previous prime is 23894391297269. The next prime is 23894391297299. The reversal of 23894391297280 is 8279219349832.

It can be written as a sum of positive squares in 4 ways, for example, as 4743474914304 + 19150916382976 = 2177952^2 + 4376176^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21600544 + ... + 22679776.

It is an arithmetic number, because the mean of its divisors is an integer number (309109345727).

Almost surely, 2^{23894391297280} is an apocalyptic number.

23894391297280 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 23894391297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33383809338516).

23894391297280 is an abundant number, since it is smaller than the sum of its proper divisors (42873227379752).

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

23894391297280 is a wasteful number, since it uses less digits than its factorization.

23894391297280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079621 (or 1079600 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 23894391297280 in words is "twenty-three trillion, eight hundred ninety-four billion, three hundred ninety-one million, two hundred ninety-seven thousand, two hundred eighty".