27321672071 has 4 divisors (see below), whose sum is σ = 27323068944. Its totient is φ = 27320275200.

The previous prime is 27321672061. The next prime is 27321672143. The reversal of 27321672071 is 17027612372.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27321672071 is a prime.

It is a super-2 number, since 2×27321672071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27321672011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668675 + ... + 708356.

It is an arithmetic number, because the mean of its divisors is an integer number (6830767236).

Almost surely, 2^27321672071 is an apocalyptic number.

27321672071 is a deficient number, since it is larger than the sum of its proper divisors (1396873).

27321672071 is a wasteful number, since it uses less digits than its factorization.

27321672071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396872.

The product of its (nonzero) digits is 49392, while the sum is 38.

The spelling of 27321672071 in words is "twenty-seven billion, three hundred twenty-one million, six hundred seventy-two thousand, seventy-one".