65360427640 has 32 divisors (see below), whose sum is σ = 147799980000. Its totient is φ = 26012790144.

The previous prime is 65360427631. The next prime is 65360427661. The reversal of 65360427640 is 4672406356.

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, 4097595 + ... + 4113514.

It is an arithmetic number, because the mean of its divisors is an integer number (4618749375).

Almost surely, 2^65360427640 is an apocalyptic number.

It is an amenable number.

65360427640 is an abundant number, since it is smaller than the sum of its proper divisors (82439552360).

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

65360427640 is a wasteful number, since it uses less digits than its factorization.

65360427640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8211319 (or 8211315 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 65360427640 in words is "sixty-five billion, three hundred sixty million, four hundred twenty-seven thousand, six hundred forty".