27479354672 has 40 divisors (see below), whose sum is σ = 66378703872. Its totient is φ = 10706241600.

The previous prime is 27479354621. The next prime is 27479354677. The reversal of 27479354672 is 27645397472.

It is a happy number.

It is a super-2 number, since 2×27479354672² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (27479354677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11151104 + ... + 11153567.

Almost surely, 2^27479354672 is an apocalyptic number.

27479354672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27479354672 is an abundant number, since it is smaller than the sum of its proper divisors (38899349200).

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

27479354672 is a wasteful number, since it uses less digits than its factorization.

27479354672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22304697 (or 22304691 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 56.

The spelling of 27479354672 in words is "twenty-seven billion, four hundred seventy-nine million, three hundred fifty-four thousand, six hundred seventy-two".