27951990926518 has 8 divisors (see below), whose sum is σ = 41937609534912. Its totient is φ = 13972787748216.

The previous prime is 27951990926449. The next prime is 27951990926533. The reversal of 27951990926518 is 81562909915972.

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

It is a super-2 number, since 2×27951990926518² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603846630 + ... + 1603864057.

It is an arithmetic number, because the mean of its divisors is an integer number (5242201191864).

Almost surely, 2^{27951990926518} is an apocalyptic number.

27951990926518 is a deficient number, since it is larger than the sum of its proper divisors (13985618608394).

27951990926518 is a wasteful number, since it uses less digits than its factorization.

27951990926518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207715046.

The product of its (nonzero) digits is 220449600, while the sum is 73.

The spelling of 27951990926518 in words is "twenty-seven trillion, nine hundred fifty-one billion, nine hundred ninety million, nine hundred twenty-six thousand, five hundred eighteen".