27451646750661 has 24 divisors (see below), whose sum is σ = 42954861403584. Its totient is φ = 15547835318400.

The previous prime is 27451646750621. The next prime is 27451646750683. The reversal of 27451646750661 is 16605764615472.

It is not a de Polignac number, because 27451646750661 - 2¹⁸ = 27451646488517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27451646750595 and 27451646750604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27451646750621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 826292665 + ... + 826325886.

It is an arithmetic number, because the mean of its divisors is an integer number (1789785891816).

Almost surely, 2^{27451646750661} is an apocalyptic number.

27451646750661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27451646750661 is a deficient number, since it is larger than the sum of its proper divisors (15503214652923).

27451646750661 is a wasteful number, since it uses less digits than its factorization.

27451646750661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652618681 (or 1652618674 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 27451646750661 in words is "twenty-seven trillion, four hundred fifty-one billion, six hundred forty-six million, seven hundred fifty thousand, six hundred sixty-one".