65613512630 has 32 divisors (see below), whose sum is σ = 131633307360. Its totient is φ = 23401474560.

The previous prime is 65613512621. The next prime is 65613512633. The reversal of 65613512630 is 3621531656.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65613512633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10153661 + ... + 10160120.

It is an arithmetic number, because the mean of its divisors is an integer number (4113540855).

Almost surely, 2^65613512630 is an apocalyptic number.

65613512630 is an abundant number, since it is smaller than the sum of its proper divisors (66019794730).

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

65613512630 is a wasteful number, since it uses less digits than its factorization.

65613512630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20313824.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 65613512630 in words is "sixty-five billion, six hundred thirteen million, five hundred twelve thousand, six hundred thirty".