27800546551 has 16 divisors (see below), whose sum is σ = 29312212608. Its totient is φ = 26331782400.

The previous prime is 27800546537. The next prime is 27800546567. The reversal of 27800546551 is 15564500872.

It is a cyclic number.

It is not a de Polignac number, because 27800546551 - 2²⁹ = 27263675639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27800546498 and 27800546507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27800546531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682581 + ... + 722161.

It is an arithmetic number, because the mean of its divisors is an integer number (1832013288).

Almost surely, 2^27800546551 is an apocalyptic number.

27800546551 is a deficient number, since it is larger than the sum of its proper divisors (1511666057).

27800546551 is a wasteful number, since it uses less digits than its factorization.

27800546551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40122.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 27800546551 in words is "twenty-seven billion, eight hundred million, five hundred forty-six thousand, five hundred fifty-one".