32138456661 has 48 divisors (see below), whose sum is σ = 49316167680. Its totient is φ = 20111652000.

The previous prime is 32138456639. The next prime is 32138456671. The reversal of 32138456661 is 16665483123.

It is not a de Polignac number, because 32138456661 - 2⁹ = 32138456149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32138456671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8849316 + ... + 8852946.

It is an arithmetic number, because the mean of its divisors is an integer number (1027420160).

Almost surely, 2^32138456661 is an apocalyptic number.

It is an amenable number.

32138456661 is a deficient number, since it is larger than the sum of its proper divisors (17177711019).

32138456661 is a wasteful number, since it uses less digits than its factorization.

32138456661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118 (or 4115 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 32138456661 in words is "thirty-two billion, one hundred thirty-eight million, four hundred fifty-six thousand, six hundred sixty-one".