27100391904 has 144 divisors (see below), whose sum is σ = 81219574800. Its totient is φ = 8547821568.

The previous prime is 27100391891. The next prime is 27100391933. The reversal of 27100391904 is 40919300172.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5540692 + ... + 5545580.

It is an arithmetic number, because the mean of its divisors is an integer number (564024825).

Almost surely, 2^27100391904 is an apocalyptic number.

27100391904 is a gapful number since it is divisible by the number (24) 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 27100391904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40609787400).

27100391904 is an abundant number, since it is smaller than the sum of its proper divisors (54119182896).

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

27100391904 is a wasteful number, since it uses less digits than its factorization.

27100391904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937 (or 5926 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 27100391904 in words is "twenty-seven billion, one hundred million, three hundred ninety-one thousand, nine hundred four".