65212472052 has 144 divisors (see below), whose sum is σ = 203578677120. Its totient is φ = 17139942144.

The previous prime is 65212472047. The next prime is 65212472063. The reversal of 65212472052 is 25027421256.

It is a super-4 number, since 4×65212472052⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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

It is a junction number, because it is equal to n+sod(n) for n = 65212471998 and 65212472016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 925899 + ... + 993837.

Almost surely, 2^65212472052 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 65212472052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101789338560).

65212472052 is an abundant number, since it is smaller than the sum of its proper divisors (138366205068).

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

65212472052 is a wasteful number, since it uses less digits than its factorization.

65212472052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68262 (or 68257 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 65212472052 in words is "sixty-five billion, two hundred twelve million, four hundred seventy-two thousand, fifty-two".