20346493734 has 216 divisors, whose sum is σ = 54665533080. Its totient is φ = 5593163184.

The previous prime is 20346493723. The next prime is 20346493751. The reversal of 20346493734 is 43739464302.

It is a self number, because there is not a number n which added to its sum of digits gives 20346493734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 344855797 + ... + 344855855.

Almost surely, 2^20346493734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20346493734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27332766540).

20346493734 is an abundant number, since it is smaller than the sum of its proper divisors (34319039346).

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

20346493734 is an equidigital number, since it uses as much as digits as its factorization.

20346493734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 20346493734 in words is "twenty billion, three hundred forty-six million, four hundred ninety-three thousand, seven hundred thirty-four".