27280872961 has 16 divisors (see below), whose sum is σ = 30719424960. Its totient is φ = 24073943040.

The previous prime is 27280872901. The next prime is 27280872977. The reversal of 27280872961 is 16927808272.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27280872961 - 2²¹ = 27278775809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27280872899 and 27280872908.

It is not an unprimeable number, because it can be changed into a prime (27280872901) 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, 404035 + ... + 466696.

It is an arithmetic number, because the mean of its divisors is an integer number (1919964060).

Almost surely, 2^27280872961 is an apocalyptic number.

It is an amenable number.

27280872961 is a deficient number, since it is larger than the sum of its proper divisors (3438551999).

27280872961 is a wasteful number, since it uses less digits than its factorization.

27280872961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870864.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 27280872961 in words is "twenty-seven billion, two hundred eighty million, eight hundred seventy-two thousand, nine hundred sixty-one".