65275057650 has 192 divisors, whose sum is σ = 187138022400. Its totient is φ = 14891040000.

The previous prime is 65275057619. The next prime is 65275057663. The reversal of 65275057650 is 5675057256.

It is a self number, because there is not a number n which added to its sum of digits gives 65275057650.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4726956 + ... + 4740744.

It is an arithmetic number, because the mean of its divisors is an integer number (974677200).

Almost surely, 2^65275057650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65275057650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93569011200).

65275057650 is an abundant number, since it is smaller than the sum of its proper divisors (121862964750).

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

65275057650 is a wasteful number, since it uses less digits than its factorization.

65275057650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985 (or 13980 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 48.

The spelling of 65275057650 in words is "sixty-five billion, two hundred seventy-five million, fifty-seven thousand, six hundred fifty".