27780000075 has 18 divisors (see below), whose sum is σ = 49757067204. Its totient is φ = 14815999920.

The previous prime is 27780000043. The next prime is 27780000107. The reversal of 27780000075 is 57000008772.

It is an interprime number because it is at equal distance from previous prime (27780000043) and next prime (27780000107).

It is not a de Polignac number, because 27780000075 - 2⁵ = 27780000043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27779999994 and 27780000039.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61733109 + ... + 61733558.

Almost surely, 2^27780000075 is an apocalyptic number.

27780000075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27780000075 is a deficient number, since it is larger than the sum of its proper divisors (21977067129).

27780000075 is a wasteful number, since it uses less digits than its factorization.

27780000075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123466683 (or 123466675 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The spelling of 27780000075 in words is "twenty-seven billion, seven hundred eighty million, seventy-five", and thus it is an aban number.