20452400660140 has 12 divisors (see below), whose sum is σ = 42950041386336. Its totient is φ = 8180960264048.

The previous prime is 20452400660119. The next prime is 20452400660233. The reversal of 20452400660140 is 4106600425402.

It is a junction number, because it is equal to n+sod(n) for n = 20452400660096 and 20452400660105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511310016484 + ... + 511310016523.

It is an arithmetic number, because the mean of its divisors is an integer number (3579170115528).

Almost surely, 2^{20452400660140} is an apocalyptic number.

20452400660140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20452400660140 is an abundant number, since it is smaller than the sum of its proper divisors (22497640726196).

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

20452400660140 is a wasteful number, since it uses less digits than its factorization.

20452400660140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022620033016 (or 1022620033014 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 20452400660140 in words is "twenty trillion, four hundred fifty-two billion, four hundred million, six hundred sixty thousand, one hundred forty".