13670722432640 has 192 divisors, whose sum is σ = 40941749275560. Its totient is φ = 4326558179328.

The previous prime is 13670722432559. The next prime is 13670722432711. The reversal of 13670722432640 is 4623422707631.

It can be written as a sum of positive squares in 4 ways, for example, as 7717239552064 + 5953482880576 = 2777992^2 + 2439976^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16358807 + ... + 17174166.

Almost surely, 2^{13670722432640} is an apocalyptic number.

13670722432640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13670722432640 is an abundant number, since it is smaller than the sum of its proper divisors (27271026842920).

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

13670722432640 is a wasteful number, since it uses less digits than its factorization.

13670722432640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33533019 (or 33533000 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 13670722432640 in words is "thirteen trillion, six hundred seventy billion, seven hundred twenty-two million, four hundred thirty-two thousand, six hundred forty".