20146734342 has 64 divisors (see below), whose sum is σ = 51347381760. Its totient is φ = 5735839392.

The previous prime is 20146734301. The next prime is 20146734397. The reversal of 20146734342 is 24343764102.

20146734342 is a `hidden beast` number, since 201 + 46 + 73 + 4 + 342 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20146734297 and 20146734306.

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, 12808 + ... + 201140.

It is an arithmetic number, because the mean of its divisors is an integer number (802302840).

Almost surely, 2^20146734342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20146734342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25673690880).

20146734342 is an abundant number, since it is smaller than the sum of its proper divisors (31200647418).

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

20146734342 is a wasteful number, since it uses less digits than its factorization.

20146734342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188634 (or 188628 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 20146734342 in words is "twenty billion, one hundred forty-six million, seven hundred thirty-four thousand, three hundred forty-two".