27198189730 has 16 divisors (see below), whose sum is σ = 51533412480. Its totient is φ = 10306682352.

The previous prime is 27198189727. The next prime is 27198189761. The reversal of 27198189730 is 3798189172.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71573994 + ... + 71574373.

It is an arithmetic number, because the mean of its divisors is an integer number (3220838280).

Almost surely, 2^27198189730 is an apocalyptic number.

27198189730 is a deficient number, since it is larger than the sum of its proper divisors (24335222750).

27198189730 is a wasteful number, since it uses less digits than its factorization.

27198189730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143148393.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 27198189730 in words is "twenty-seven billion, one hundred ninety-eight million, one hundred eighty-nine thousand, seven hundred thirty".