340505253040 has 20 divisors (see below), whose sum is σ = 791674713504. Its totient is φ = 136202101184.

The previous prime is 340505253031. The next prime is 340505253047. The reversal of 340505253040 is 40352505043.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 340505252993 and 340505253011.

It is not an unprimeable number, because it can be changed into a prime (340505253047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128157752 + ... + 2128157911.

Almost surely, 2^340505253040 is an apocalyptic number.

It is an amenable number.

340505253040 is an abundant number, since it is smaller than the sum of its proper divisors (451169460464).

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

340505253040 is a wasteful number, since it uses less digits than its factorization.

340505253040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256315676 (or 4256315670 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 340505253040 its reverse (40352505043), we get a palindrome (380857758083).

The spelling of 340505253040 in words is "three hundred forty billion, five hundred five million, two hundred fifty-three thousand, forty".