20453217357104 has 20 divisors (see below), whose sum is σ = 45289267005264. Its totient is φ = 8765664581568.

The previous prime is 20453217357059. The next prime is 20453217357179. The reversal of 20453217357104 is 40175371235402.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91309005947 + ... + 91309006170.

Almost surely, 2^{20453217357104} is an apocalyptic number.

It is an amenable number.

20453217357104 is an abundant number, since it is smaller than the sum of its proper divisors (24836049648160).

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

20453217357104 is a wasteful number, since it uses less digits than its factorization.

20453217357104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182618012132 (or 182618012126 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 20453217357104 in words is "twenty trillion, four hundred fifty-three billion, two hundred seventeen million, three hundred fifty-seven thousand, one hundred four".