27660654451 has 8 divisors (see below), whose sum is σ = 28052398080. Its totient is φ = 27270303432.

The previous prime is 27660654443. The next prime is 27660654523. The reversal of 27660654451 is 15445606672.

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

It is a cyclic number.

It is not a de Polignac number, because 27660654451 - 2³ = 27660654443 is a prime.

It is a super-2 number, since 2×27660654451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27660654751) 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, 308115 + ... + 387628.

It is an arithmetic number, because the mean of its divisors is an integer number (3506549760).

Almost surely, 2^27660654451 is an apocalyptic number.

27660654451 is a deficient number, since it is larger than the sum of its proper divisors (391743629).

27660654451 is an equidigital number, since it uses as much as digits as its factorization.

27660654451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696305.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 27660654451 in words is "twenty-seven billion, six hundred sixty million, six hundred fifty-four thousand, four hundred fifty-one".