32140137721 has 8 divisors (see below), whose sum is σ = 32367712520. Its totient is φ = 31912852608.

The previous prime is 32140137643. The next prime is 32140137767. The reversal of 32140137721 is 12773104123.

It can be written as a sum of positive squares in 4 ways, for example, as 3499314025 + 28640823696 = 59155^2 + 169236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32140137721 - 2¹¹ = 32140135673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32140137791) 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 7 ways as a sum of consecutive naturals, for example, 152725 + ... + 295981.

It is an arithmetic number, because the mean of its divisors is an integer number (4045964065).

Almost surely, 2^32140137721 is an apocalyptic number.

It is an amenable number.

32140137721 is a deficient number, since it is larger than the sum of its proper divisors (227574799).

32140137721 is a wasteful number, since it uses less digits than its factorization.

32140137721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144843.

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 32140137721 in words is "thirty-two billion, one hundred forty million, one hundred thirty-seven thousand, seven hundred twenty-one".