66452072125 has 32 divisors (see below), whose sum is σ = 85717771776. Its totient is φ = 51403307200.

The previous prime is 66452072087. The next prime is 66452072131. The reversal of 66452072125 is 52127025466.

It is not a de Polignac number, because 66452072125 - 2¹⁹ = 66451547837 is a prime.

It is a Duffinian number.

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, 419487 + ... + 555763.

It is an arithmetic number, because the mean of its divisors is an integer number (2678680368).

Almost surely, 2^66452072125 is an apocalyptic number.

It is an amenable number.

66452072125 is a deficient number, since it is larger than the sum of its proper divisors (19265699651).

66452072125 is a wasteful number, since it uses less digits than its factorization.

66452072125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136422 (or 136412 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 66452072125 in words is "sixty-six billion, four hundred fifty-two million, seventy-two thousand, one hundred twenty-five".