27801306403638 has 8 divisors (see below), whose sum is σ = 55602612807288. Its totient is φ = 9267102134544.

The previous prime is 27801306403573. The next prime is 27801306403643. The reversal of 27801306403638 is 83630460310872.

It is a sphenic number, since it is the product of 3 distinct primes.

27801306403638 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316775533631 + ... + 2316775533642.

It is an arithmetic number, because the mean of its divisors is an integer number (6950326600911).

Almost surely, 2^{27801306403638} is an apocalyptic number.

27801306403638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27801306403638 is a wasteful number, since it uses less digits than its factorization.

27801306403638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633551067278.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 27801306403638 in words is "twenty-seven trillion, eight hundred one billion, three hundred six million, four hundred three thousand, six hundred thirty-eight".