27438640354454 has 16 divisors (see below), whose sum is σ = 47100302578176. Its totient is φ = 11743758945000.

The previous prime is 27438640354427. The next prime is 27438640354493. The reversal of 27438640354454 is 45445304683472.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27438640354393 and 27438640354402.

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, 1304851592 + ... + 1304872619.

It is an arithmetic number, because the mean of its divisors is an integer number (2943768911136).

Almost surely, 2^{27438640354454} is an apocalyptic number.

27438640354454 is a deficient number, since it is larger than the sum of its proper divisors (19661662223722).

27438640354454 is a wasteful number, since it uses less digits than its factorization.

27438640354454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609724971.

The product of its (nonzero) digits is 154828800, while the sum is 59.

The spelling of 27438640354454 in words is "twenty-seven trillion, four hundred thirty-eight billion, six hundred forty million, three hundred fifty-four thousand, four hundred fifty-four".