1343634656820 has 48 divisors (see below), whose sum is σ = 3789243084480. Its totient is φ = 355724856576.

The previous prime is 1343634656809. The next prime is 1343634656821. The reversal of 1343634656820 is 286564363431.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343634656821) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 80545297 + ... + 80561976.

It is an arithmetic number, because the mean of its divisors is an integer number (78942564260).

Almost surely, 2^{1343634656820} is an apocalyptic number.

1343634656820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343634656820 is an abundant number, since it is smaller than the sum of its proper divisors (2445608427660).

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

1343634656820 is a wasteful number, since it uses less digits than its factorization.

1343634656820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161107424 (or 161107422 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 1343634656820 in words is "one trillion, three hundred forty-three billion, six hundred thirty-four million, six hundred fifty-six thousand, eight hundred twenty".