236440013040 has 640 divisors, whose sum is σ = 1026834278400. Its totient is φ = 48575324160.

The previous prime is 236440013023. The next prime is 236440013053. The reversal of 236440013040 is 40310044632.

236440013040 is a `hidden beast` number, since 2 + 3 + 644 + 0 + 0 + 13 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 236440012995 and 236440013013.

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, 14794494 + ... + 14810466.

It is an arithmetic number, because the mean of its divisors is an integer number (1604428560).

Almost surely, 2^236440013040 is an apocalyptic number.

236440013040 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 236440013040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513417139200).

236440013040 is an abundant number, since it is smaller than the sum of its proper divisors (790394265360).

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

236440013040 is a wasteful number, since it uses less digits than its factorization.

236440013040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16102 (or 16090 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 236440013040 its reverse (40310044632), we get a palindrome (276750057672).

The spelling of 236440013040 in words is "two hundred thirty-six billion, four hundred forty million, thirteen thousand, forty".