27454972545 has 768 divisors, whose sum is σ = 75259699200. Its totient is φ = 9137111040.

The previous prime is 27454972513. The next prime is 27454972547. The reversal of 27454972545 is 54527945472.

It is a happy number.

27454972545 is a `hidden beast` number, since 2 + 7 + 4 + 5 + 4 + 97 + 2 + 545 = 666.

It is not a de Polignac number, because 27454972545 - 2⁵ = 27454972513 is a prime.

Its product of digits (14112000) is a multiple of the sum of its prime divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 27454972491 and 27454972500.

It is not an unprimeable number, because it can be changed into a prime (27454972547) by changing a digit.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 742026267 + ... + 742026303.

It is an arithmetic number, because the mean of its divisors is an integer number (97994400).

Almost surely, 2^27454972545 is an apocalyptic number.

It is an amenable number.

27454972545 is an abundant number, since it is smaller than the sum of its proper divisors (47804726655).

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

27454972545 is a wasteful number, since it uses less digits than its factorization.

27454972545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 112 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 54.

It can be divided in two parts, 27454 and 972545, that added together give a palindrome (999999).

The spelling of 27454972545 in words is "twenty-seven billion, four hundred fifty-four million, nine hundred seventy-two thousand, five hundred forty-five".