20403485500432 has 20 divisors (see below), whose sum is σ = 39531838489020. Its totient is φ = 10201720729088.

The previous prime is 20403485500393. The next prime is 20403485500459. The reversal of 20403485500432 is 23400558430402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8510615951616 + 11892869548816 = 2917296^2 + 3448604^2 .

It is a super-2 number, since 2×20403485500432² (a number of 27 digits) contains 22 as substring.

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, 8350908 + ... + 10514020.

It is an arithmetic number, because the mean of its divisors is an integer number (1976591924451).

Almost surely, 2^{20403485500432} is an apocalyptic number.

It is an amenable number.

20403485500432 is a deficient number, since it is larger than the sum of its proper divisors (19128352988588).

20403485500432 is a wasteful number, since it uses less digits than its factorization.

20403485500432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752650 (or 2752644 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 20403485500432 in words is "twenty trillion, four hundred three billion, four hundred eighty-five million, five hundred thousand, four hundred thirty-two".