65571451000 has 128 divisors (see below), whose sum is σ = 176196384000. Its totient is φ = 22589136000.

The previous prime is 65571450983. The next prime is 65571451013. The reversal of 65571451000 is 15417556.

65571451000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52131 + ... + 365869.

It is an arithmetic number, because the mean of its divisors is an integer number (1376534250).

Almost surely, 2^65571451000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65571451000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88098192000).

65571451000 is an abundant number, since it is smaller than the sum of its proper divisors (110624933000).

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

65571451000 is a wasteful number, since it uses less digits than its factorization.

65571451000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313790 (or 313776 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

Adding to 65571451000 its reverse (15417556), we get a palindrome (65586868556).

The spelling of 65571451000 in words is "sixty-five billion, five hundred seventy-one million, four hundred fifty-one thousand".