27078997933 has 18 divisors (see below), whose sum is σ = 30129199422. Its totient is φ = 24308743680.

The previous prime is 27078997931. The next prime is 27078997973. The reversal of 27078997933 is 33979987072.

It can be written as a sum of positive squares in 9 ways, for example, as 10654781284 + 16424216649 = 103222^2 + 128157^2 .

It is not a de Polignac number, because 27078997933 - 2¹ = 27078997931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27078997931) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13011453 + ... + 13013533.

Almost surely, 2^27078997933 is an apocalyptic number.

It is an amenable number.

27078997933 is a deficient number, since it is larger than the sum of its proper divisors (3050201489).

27078997933 is an frugal number, since it uses more digits than its factorization.

27078997933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 36006768, while the sum is 64.

The spelling of 27078997933 in words is "twenty-seven billion, seventy-eight million, nine hundred ninety-seven thousand, nine hundred thirty-three".