339956645640 has 128 divisors (see below), whose sum is σ = 1041918543360. Its totient is φ = 88696525824.

The previous prime is 339956645591. The next prime is 339956645663. The reversal of 339956645640 is 46546659933.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20504394 + ... + 20520966.

It is an arithmetic number, because the mean of its divisors is an integer number (8139988620).

Almost surely, 2^339956645640 is an apocalyptic number.

339956645640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 339956645640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520959271680).

339956645640 is an abundant number, since it is smaller than the sum of its proper divisors (701961897720).

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

339956645640 is a wasteful number, since it uses less digits than its factorization.

339956645640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20271 (or 20267 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 60.

The spelling of 339956645640 in words is "three hundred thirty-nine billion, nine hundred fifty-six million, six hundred forty-five thousand, six hundred forty".