20353230233640 has 96 divisors (see below), whose sum is σ = 67269150842400. Its totient is φ = 5335536055680.

The previous prime is 20353230233561. The next prime is 20353230233717. The reversal of 20353230233640 is 4633203235302.

20353230233640 is a `hidden beast` number, since 2 + 0 + 3 + 5 + 3 + 2 + 3 + 0 + 2 + 3 + 3 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20353230233595 and 20353230233604.

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, 479103766 + ... + 479146245.

It is an arithmetic number, because the mean of its divisors is an integer number (700720321275).

Almost surely, 2^{20353230233640} is an apocalyptic number.

20353230233640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20353230233640 is an abundant number, since it is smaller than the sum of its proper divisors (46915920608760).

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

20353230233640 is a wasteful number, since it uses less digits than its factorization.

20353230233640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958250087 (or 958250080 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 36.

Adding to 20353230233640 its reverse (4633203235302), we get a palindrome (24986433468942).

The spelling of 20353230233640 in words is "twenty trillion, three hundred fifty-three billion, two hundred thirty million, two hundred thirty-three thousand, six hundred forty".