20343246534 has 96 divisors (see below), whose sum is σ = 50073004800. Its totient is φ = 5917302720.

The previous prime is 20343246533. The next prime is 20343246589. The reversal of 20343246534 is 43564234302.

20343246534 is a `hidden beast` number, since 20 + 34 + 32 + 46 + 534 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343246533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2178327 + ... + 2187645.

It is an arithmetic number, because the mean of its divisors is an integer number (521593800).

Almost surely, 2^20343246534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20343246534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25036502400).

20343246534 is an abundant number, since it is smaller than the sum of its proper divisors (29729758266).

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

20343246534 is a wasteful number, since it uses less digits than its factorization.

20343246534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9850 (or 9847 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

The spelling of 20343246534 in words is "twenty billion, three hundred forty-three million, two hundred forty-six thousand, five hundred thirty-four".