27961103986 has 32 divisors (see below), whose sum is σ = 43792721280. Its totient is φ = 13378646400.

The previous prime is 27961103927. The next prime is 27961103999. The reversal of 27961103986 is 68930116972.

It is a happy number.

It is a super-2 number, since 2×27961103986² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134745 + ... + 1159123.

It is an arithmetic number, because the mean of its divisors is an integer number (1368522540).

Almost surely, 2^27961103986 is an apocalyptic number.

27961103986 is a deficient number, since it is larger than the sum of its proper divisors (15831617294).

27961103986 is a wasteful number, since it uses less digits than its factorization.

27961103986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24690.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 27961103986 in words is "twenty-seven billion, nine hundred sixty-one million, one hundred three thousand, nine hundred eighty-six".