66725576337 has 16 divisors (see below), whose sum is σ = 101688645632. Its totient is φ = 38124559440.

The previous prime is 66725576257. The next prime is 66725576363. The reversal of 66725576337 is 73367552766.

It is not a de Polignac number, because 66725576337 - 2¹⁹ = 66725052049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66725576237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12762 + ... + 365532.

It is an arithmetic number, because the mean of its divisors is an integer number (6355540352).

Almost surely, 2^66725576337 is an apocalyptic number.

It is an amenable number.

66725576337 is a deficient number, since it is larger than the sum of its proper divisors (34963069295).

66725576337 is a wasteful number, since it uses less digits than its factorization.

66725576337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361788.

The product of its digits is 33339600, while the sum is 57.

The spelling of 66725576337 in words is "sixty-six billion, seven hundred twenty-five million, five hundred seventy-six thousand, three hundred thirty-seven".