27632012721 has 32 divisors (see below), whose sum is σ = 42018071040. Its totient is φ = 16043215104.

The previous prime is 27632012713. The next prime is 27632012729. The reversal of 27632012721 is 12721023672.

It is an interprime number because it is at equal distance from previous prime (27632012713) and next prime (27632012729).

It is not a de Polignac number, because 27632012721 - 2³ = 27632012713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27632012729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289915 + ... + 373248.

It is an arithmetic number, because the mean of its divisors is an integer number (1313064720).

Almost surely, 2^27632012721 is an apocalyptic number.

It is an amenable number.

27632012721 is a deficient number, since it is larger than the sum of its proper divisors (14386058319).

27632012721 is a wasteful number, since it uses less digits than its factorization.

27632012721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663245.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 27632012721 in words is "twenty-seven billion, six hundred thirty-two million, twelve thousand, seven hundred twenty-one".