27102612440 has 64 divisors (see below), whose sum is σ = 64806687360. Its totient is φ = 10165616640.

The previous prime is 27102612437. The next prime is 27102612479. The reversal of 27102612440 is 4421620172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110744 + ... + 257816.

It is an arithmetic number, because the mean of its divisors is an integer number (1012604490).

Almost surely, 2^27102612440 is an apocalyptic number.

27102612440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27102612440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32403343680).

27102612440 is an abundant number, since it is smaller than the sum of its proper divisors (37704074920).

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

27102612440 is a wasteful number, since it uses less digits than its factorization.

27102612440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147372 (or 147368 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 27102612440 in words is "twenty-seven billion, one hundred two million, six hundred twelve thousand, four hundred forty".