27953009868 has 48 divisors (see below), whose sum is σ = 77111758080. Its totient is φ = 7711174464.

The previous prime is 27953009863. The next prime is 27953009869. The reversal of 27953009868 is 86890035972.

It is not an unprimeable number, because it can be changed into a prime (27953009863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5735046 + ... + 5739917.

It is an arithmetic number, because the mean of its divisors is an integer number (1606494960).

Almost surely, 2^27953009868 is an apocalyptic number.

27953009868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27953009868 is an abundant number, since it is smaller than the sum of its proper divisors (49158748212).

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

27953009868 is a wasteful number, since it uses less digits than its factorization.

27953009868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11475006 (or 11475004 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 27953009868 in words is "twenty-seven billion, nine hundred fifty-three million, nine thousand, eight hundred sixty-eight".