340140436734 has 24 divisors (see below), whose sum is σ = 791347139208. Its totient is φ = 97182981840.

The previous prime is 340140436703. The next prime is 340140436751. The reversal of 340140436734 is 437634041043.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 340140436692 and 340140436701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578469837 + ... + 578470424.

It is an arithmetic number, because the mean of its divisors is an integer number (32972797467).

Almost surely, 2^340140436734 is an apocalyptic number.

340140436734 is an abundant number, since it is smaller than the sum of its proper divisors (451206702474).

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

340140436734 is a wasteful number, since it uses less digits than its factorization.

340140436734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156940280 (or 1156940273 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 39.

Adding to 340140436734 its reverse (437634041043), we get a palindrome (777774477777).

The spelling of 340140436734 in words is "three hundred forty billion, one hundred forty million, four hundred thirty-six thousand, seven hundred thirty-four".