65578972704 has 192 divisors, whose sum is σ = 198585354240. Its totient is φ = 18561669120.

The previous prime is 65578972633. The next prime is 65578972717. The reversal of 65578972704 is 40727987556.

65578972704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 37408692 + ... + 37410444.

It is an arithmetic number, because the mean of its divisors is an integer number (1034298720).

Almost surely, 2^65578972704 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 65578972704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99292677120).

65578972704 is an abundant number, since it is smaller than the sum of its proper divisors (133006381536).

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

65578972704 is a wasteful number, since it uses less digits than its factorization.

65578972704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 60.

The spelling of 65578972704 in words is "sixty-five billion, five hundred seventy-eight million, nine hundred seventy-two thousand, seven hundred four".