65620103304640 has 28 divisors (see below), whose sum is σ = 156257870994936. Its totient is φ = 26248041321728.

The previous prime is 65620103304583. The next prime is 65620103304653. The reversal of 65620103304640 is 4640330102656.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 65620103304593 and 65620103304602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102531411094 + ... + 102531411733.

Almost surely, 2^{65620103304640} is an apocalyptic number.

It is an amenable number.

65620103304640 is an abundant number, since it is smaller than the sum of its proper divisors (90637767690296).

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

65620103304640 is a wasteful number, since it uses less digits than its factorization.

65620103304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205062822844 (or 205062822834 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 65620103304640 in words is "sixty-five trillion, six hundred twenty billion, one hundred three million, three hundred four thousand, six hundred forty".