2355996206440 has 32 divisors (see below), whose sum is σ = 5304286197000. Its totient is φ = 941812752384.

The previous prime is 2355996206401. The next prime is 2355996206453. The reversal of 2355996206440 is 446026995532.

It can be written as a sum of positive squares in 4 ways, for example, as 1963310997124 + 392685209316 = 1401182^2 + 626646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18238905 + ... + 18367624.

Almost surely, 2^{2355996206440} is an apocalyptic number.

2355996206440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2355996206440 is an abundant number, since it is smaller than the sum of its proper divisors (2948289990560).

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

2355996206440 is a wasteful number, since it uses less digits than its factorization.

2355996206440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36608149 (or 36608145 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 2355996206440 in words is "two trillion, three hundred fifty-five billion, nine hundred ninety-six million, two hundred six thousand, four hundred forty".