65145710574 has 144 divisors (see below), whose sum is σ = 173766104928. Its totient is φ = 17219284992.

The previous prime is 65145710563. The next prime is 65145710579. The reversal of 65145710574 is 47501754156.

65145710574 is a `hidden beast` number, since 6 + 5 + 1 + 4 + 5 + 71 + 0 + 574 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65145710579) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7451934 + ... + 7460670.

It is an arithmetic number, because the mean of its divisors is an integer number (1206709062).

Almost surely, 2^65145710574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65145710574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86883052464).

65145710574 is an abundant number, since it is smaller than the sum of its proper divisors (108620394354).

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

65145710574 is a wasteful number, since it uses less digits than its factorization.

65145710574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8887 (or 8825 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The spelling of 65145710574 in words is "sixty-five billion, one hundred forty-five million, seven hundred ten thousand, five hundred seventy-four".