20402545314240 has 168 divisors, whose sum is σ = 72440005292928. Its totient is φ = 5265172961280.

The previous prime is 20402545314233. The next prime is 20402545314247. The reversal of 20402545314240 is 4241354520402.

20402545314240 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 2 + 545 + 31 + 42 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (20402545314233) and next prime (20402545314247).

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 = 20402545314195 and 20402545314204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402545314247) 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, 114172287 + ... + 114350846.

It is an arithmetic number, because the mean of its divisors is an integer number (431190507696).

Almost surely, 2^{20402545314240} is an apocalyptic number.

20402545314240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20402545314240 is an abundant number, since it is smaller than the sum of its proper divisors (52037459978688).

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

20402545314240 is a wasteful number, since it uses less digits than its factorization.

20402545314240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228523187 (or 228523174 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 20402545314240 its reverse (4241354520402), we get a palindrome (24643899834642).

The spelling of 20402545314240 in words is "twenty trillion, four hundred two billion, five hundred forty-five million, three hundred fourteen thousand, two hundred forty".