20403500192340 has 24 divisors (see below), whose sum is σ = 57129800538720. Its totient is φ = 5440933384608.

The previous prime is 20403500192297. The next prime is 20403500192351. The reversal of 20403500192340 is 4329100530402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170029168210 + ... + 170029168329.

It is an arithmetic number, because the mean of its divisors is an integer number (2380408355780).

Almost surely, 2^{20403500192340} is an apocalyptic number.

20403500192340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403500192340 is an abundant number, since it is smaller than the sum of its proper divisors (36726300346380).

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

20403500192340 is a wasteful number, since it uses less digits than its factorization.

20403500192340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340058336551 (or 340058336549 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20403500192340 in words is "twenty trillion, four hundred three billion, five hundred million, one hundred ninety-two thousand, three hundred forty".