27802624640 has 64 divisors (see below), whose sum is σ = 75960754560. Its totient is φ = 9532326912.

The previous prime is 27802624609. The next prime is 27802624643. The reversal of 27802624640 is 4642620872.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (27802624643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098492 + ... + 3107451.

It is an arithmetic number, because the mean of its divisors is an integer number (1186886790).

Almost surely, 2^27802624640 is an apocalyptic number.

27802624640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27802624640 is an abundant number, since it is smaller than the sum of its proper divisors (48158129920).

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

27802624640 is an equidigital number, since it uses as much as digits as its factorization.

27802624640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205969 (or 6205957 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 27802624640 in words is "twenty-seven billion, eight hundred two million, six hundred twenty-four thousand, six hundred forty".