65015451072 has 504 divisors, whose sum is σ = 223937492688. Its totient is φ = 17779507200.

The previous prime is 65015451031. The next prime is 65015451097. The reversal of 65015451072 is 27015451056.

65015451072 is a `hidden beast` number, since 6 + 5 + 0 + 1 + 545 + 107 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 231371572 + ... + 231371852.

It is an arithmetic number, because the mean of its divisors is an integer number (444320422).

Almost surely, 2^65015451072 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 65015451072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111968746344).

65015451072 is an abundant number, since it is smaller than the sum of its proper divisors (158922041616).

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

65015451072 is a wasteful number, since it uses less digits than its factorization.

65015451072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 65015451072 in words is "sixty-five billion, fifteen million, four hundred fifty-one thousand, seventy-two".