39066655881 has 16 divisors (see below), whose sum is σ = 56832090048. Its totient is φ = 23673484800.

The previous prime is 39066655867. The next prime is 39066655891. The reversal of 39066655881 is 18855666093.

It is a de Polignac number, because none of the positive numbers 2^k-39066655881 is a prime.

It is a super-2 number, since 2×39066655881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39066655891) 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, 171921 + ... + 328161.

It is an arithmetic number, because the mean of its divisors is an integer number (3552005628).

Almost surely, 2^39066655881 is an apocalyptic number.

It is an amenable number.

39066655881 is a deficient number, since it is larger than the sum of its proper divisors (17765434167).

39066655881 is a wasteful number, since it uses less digits than its factorization.

39066655881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163832.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 39066655881 in words is "thirty-nine billion, sixty-six million, six hundred fifty-five thousand, eight hundred eighty-one".