72566466527 has 4 divisors (see below), whose sum is σ = 72573416496. Its totient is φ = 72559516560.

The previous prime is 72566466499. The next prime is 72566466541.

72566466527 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72566466527 - 2¹⁸ = 72566204383 is a prime.

It is a super-2 number, since 2×72566466527² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72566466727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3459299 + ... + 3480212.

It is an arithmetic number, because the mean of its divisors is an integer number (18143354124).

Almost surely, 2^72566466527 is an apocalyptic number.

72566466527 is a deficient number, since it is larger than the sum of its proper divisors (6949969).

72566466527 is a wasteful number, since it uses less digits than its factorization.

72566466527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949968.

The product of its digits is 25401600, while the sum is 56.

The spelling of 72566466527 in words is "seventy-two billion, five hundred sixty-six million, four hundred sixty-six thousand, five hundred twenty-seven".