27180771954 has 64 divisors (see below), whose sum is σ = 63627005952. Its totient is φ = 7580664000.

The previous prime is 27180771949. The next prime is 27180771967. The reversal of 27180771954 is 45917708172.

27180771954 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 27180771897 and 27180771906.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256059 + ... + 346305.

It is an arithmetic number, because the mean of its divisors is an integer number (994171968).

Almost surely, 2^27180771954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27180771954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31813502976).

27180771954 is an abundant number, since it is smaller than the sum of its proper divisors (36446233998).

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

27180771954 is a wasteful number, since it uses less digits than its factorization.

27180771954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90431.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 27180771954 in words is "twenty-seven billion, one hundred eighty million, seven hundred seventy-one thousand, nine hundred fifty-four".