27797502100 has 36 divisors (see below), whose sum is σ = 61146904924. Its totient is φ = 10966682880.

The previous prime is 27797502059. The next prime is 27797502101. The reversal of 27797502100 is 120579772.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 289952784 + 27507549316 = 17028^2 + 165854^2 .

It is a super-2 number, since 2×27797502100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27797502101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1896639 + ... + 1911238.

Almost surely, 2^27797502100 is an apocalyptic number.

27797502100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27797502100 is an abundant number, since it is smaller than the sum of its proper divisors (33349402824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27797502100 is a wasteful number, since it uses less digits than its factorization.

27797502100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807964 (or 3807957 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 40.

The spelling of 27797502100 in words is "twenty-seven billion, seven hundred ninety-seven million, five hundred two thousand, one hundred".