20450346602540 has 24 divisors (see below), whose sum is σ = 43550597274912. Its totient is φ = 8064925420160.

The previous prime is 20450346602531. The next prime is 20450346602561. The reversal of 20450346602540 is 4520664305402.

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, 7200824849 + ... + 7200827688.

It is an arithmetic number, because the mean of its divisors is an integer number (1814608219788).

Almost surely, 2^{20450346602540} is an apocalyptic number.

20450346602540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20450346602540 is an abundant number, since it is smaller than the sum of its proper divisors (23100250672372).

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

20450346602540 is a wasteful number, since it uses less digits than its factorization.

20450346602540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14401652617 (or 14401652615 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 20450346602540 in words is "twenty trillion, four hundred fifty billion, three hundred forty-six million, six hundred two thousand, five hundred forty".