65970231504 has 80 divisors (see below), whose sum is σ = 175988736000. Its totient is φ = 21272480640.

The previous prime is 65970231491. The next prime is 65970231563. The reversal of 65970231504 is 40513207956.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4705497 + ... + 4719495.

It is an arithmetic number, because the mean of its divisors is an integer number (2199859200).

Almost surely, 2^65970231504 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 65970231504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87994368000).

65970231504 is an abundant number, since it is smaller than the sum of its proper divisors (110018504496).

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

65970231504 is a wasteful number, since it uses less digits than its factorization.

65970231504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208 (or 17202 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 65970231504 in words is "sixty-five billion, nine hundred seventy million, two hundred thirty-one thousand, five hundred four".