27102636421 has 12 divisors (see below), whose sum is σ = 32061925440. Its totient is φ = 22837085880.

The previous prime is 27102636389. The next prime is 27102636437. The reversal of 27102636421 is 12463620172.

It is not a de Polignac number, because 27102636421 - 2⁵ = 27102636389 is a prime.

It is a super-3 number, since 3×27102636421³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27102633421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4684525 + ... + 4690306.

It is an arithmetic number, because the mean of its divisors is an integer number (2671827120).

Almost surely, 2^27102636421 is an apocalyptic number.

It is an amenable number.

27102636421 is a deficient number, since it is larger than the sum of its proper divisors (4959289019).

27102636421 is an equidigital number, since it uses as much as digits as its factorization.

27102636421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9374904 (or 9374897 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 27102636421 in words is "twenty-seven billion, one hundred two million, six hundred thirty-six thousand, four hundred twenty-one".