65720003766736 has 40 divisors (see below), whose sum is σ = 140981446368864. Its totient is φ = 29426867352960.

The previous prime is 65720003766707. The next prime is 65720003766853. The reversal of 65720003766736 is 63766730002756.

It is a happy number.

It is a congruent number.

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, 2786623375 + ... + 2786646958.

Almost surely, 2^{65720003766736} is an apocalyptic number.

It is an amenable number.

65720003766736 is an abundant number, since it is smaller than the sum of its proper divisors (75261442602128).

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

65720003766736 is a wasteful number, since it uses less digits than its factorization.

65720003766736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573270419 (or 5573270413 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 58.

The spelling of 65720003766736 in words is "sixty-five trillion, seven hundred twenty billion, three million, seven hundred sixty-six thousand, seven hundred thirty-six".