20313465542520 has 128 divisors (see below), whose sum is σ = 61527480560640. Its totient is φ = 5364767797760.

The previous prime is 20313465542507. The next prime is 20313465542551. The reversal of 20313465542520 is 2524556431302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45139825 + ... + 45587615.

It is an arithmetic number, because the mean of its divisors is an integer number (480683441880).

Almost surely, 2^{20313465542520} is an apocalyptic number.

20313465542520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313465542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30763740280320).

20313465542520 is an abundant number, since it is smaller than the sum of its proper divisors (41214015018120).

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

20313465542520 is a wasteful number, since it uses less digits than its factorization.

20313465542520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451445 (or 451441 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 20313465542520 in words is "twenty trillion, three hundred thirteen billion, four hundred sixty-five million, five hundred forty-two thousand, five hundred twenty".