27413890640 has 40 divisors (see below), whose sum is σ = 63767300328. Its totient is φ = 10960394240.

The previous prime is 27413890591. The next prime is 27413890657. The reversal of 27413890640 is 4609831472.

It can be written as a sum of positive squares in 4 ways, for example, as 2688215104 + 24725675536 = 51848^2 + 157244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 27413890591 and 27413890600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92660 + ... + 251820.

Almost surely, 2^27413890640 is an apocalyptic number.

27413890640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27413890640 is an abundant number, since it is smaller than the sum of its proper divisors (36353409688).

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

27413890640 is a wasteful number, since it uses less digits than its factorization.

27413890640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161327 (or 161321 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 27413890640 in words is "twenty-seven billion, four hundred thirteen million, eight hundred ninety thousand, six hundred forty".