27990172373 has 8 divisors (see below), whose sum is σ = 29474913120. Its totient is φ = 26506589040.

The previous prime is 27990172361. The next prime is 27990172417. The reversal of 27990172373 is 37327109972.

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 27990172373 - 2¹² = 27990168277 is a prime.

It is a super-2 number, since 2×27990172373² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27990172333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239483 + ... + 336648.

It is an arithmetic number, because the mean of its divisors is an integer number (3684364140).

Almost surely, 2^27990172373 is an apocalyptic number.

It is an amenable number.

27990172373 is a deficient number, since it is larger than the sum of its proper divisors (1484740747).

27990172373 is a wasteful number, since it uses less digits than its factorization.

27990172373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578707.

The product of its (nonzero) digits is 1000188, while the sum is 50.

The spelling of 27990172373 in words is "twenty-seven billion, nine hundred ninety million, one hundred seventy-two thousand, three hundred seventy-three".