16720302073240 has 64 divisors (see below), whose sum is σ = 38378937152160. Its totient is φ = 6554486615040.

The previous prime is 16720302073213. The next prime is 16720302073261. The reversal of 16720302073240 is 4237020302761.

It is a self number, because there is not a number n which added to its sum of digits gives 16720302073240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17777646 + ... + 18694525.

Almost surely, 2^{16720302073240} is an apocalyptic number.

16720302073240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16720302073240 is an abundant number, since it is smaller than the sum of its proper divisors (21658635078920).

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

16720302073240 is a wasteful number, since it uses less digits than its factorization.

16720302073240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36472412 (or 36472408 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 16720302073240 in words is "sixteen trillion, seven hundred twenty billion, three hundred two million, seventy-three thousand, two hundred forty".