27455103640 has 32 divisors (see below), whose sum is σ = 61907446080. Its totient is φ = 10958314752.

The previous prime is 27455103589. The next prime is 27455103653. The reversal of 27455103640 is 4630155472.

It is a self number, because there is not a number n which added to its sum of digits gives 27455103640.

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, 722709 + ... + 759748.

It is an arithmetic number, because the mean of its divisors is an integer number (1934607690).

Almost surely, 2^27455103640 is an apocalyptic number.

27455103640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27455103640 is an abundant number, since it is smaller than the sum of its proper divisors (34452342440).

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

27455103640 is a wasteful number, since it uses less digits than its factorization.

27455103640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482931 (or 1482927 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 27455103640 in words is "twenty-seven billion, four hundred fifty-five million, one hundred three thousand, six hundred forty".