65402253630 has 240 divisors, whose sum is σ = 216606961296. Its totient is φ = 14069583360.

The previous prime is 65402253569. The next prime is 65402253643. The reversal of 65402253630 is 3635220456.

65402253630 is a `hidden beast` number, since 6 + 540 + 2 + 2 + 53 + 63 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 626265 + ... + 723195.

Almost surely, 2^65402253630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65402253630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108303480648).

65402253630 is an abundant number, since it is smaller than the sum of its proper divisors (151204707666).

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

65402253630 is a wasteful number, since it uses less digits than its factorization.

65402253630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96981 (or 96965 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 65402253630 in words is "sixty-five billion, four hundred two million, two hundred fifty-three thousand, six hundred thirty".