20354705515384 has 64 divisors (see below), whose sum is σ = 41111070013440. Its totient is φ = 9413732144640.

The previous prime is 20354705515303. The next prime is 20354705515399. The reversal of 20354705515384 is 48351550745302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564454 + ... + 6876469.

It is an arithmetic number, because the mean of its divisors is an integer number (642360468960).

Almost surely, 2^{20354705515384} is an apocalyptic number.

It is an amenable number.

20354705515384 is an abundant number, since it is smaller than the sum of its proper divisors (20756364498056).

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

20354705515384 is a wasteful number, since it uses less digits than its factorization.

20354705515384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441220 (or 9441216 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 52.

The spelling of 20354705515384 in words is "twenty trillion, three hundred fifty-four billion, seven hundred five million, five hundred fifteen thousand, three hundred eighty-four".