27693964525 has 12 divisors (see below), whose sum is σ = 34343729812. Its totient is φ = 22153098240.

The previous prime is 27693964523. The next prime is 27693964531. The reversal of 27693964525 is 52546939672.

It can be written as a sum of positive squares in 6 ways, for example, as 1709491716 + 25984472809 = 41346^2 + 161197^2 .

It is not a de Polignac number, because 27693964525 - 2¹ = 27693964523 is a prime.

It is a super-2 number, since 2×27693964525² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27693964525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27693964523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256639 + ... + 348211.

Almost surely, 2^27693964525 is an apocalyptic number.

27693964525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27693964525 is a deficient number, since it is larger than the sum of its proper divisors (6649765287).

27693964525 is a wasteful number, since it uses less digits than its factorization.

27693964525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103680 (or 103675 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 58.

The spelling of 27693964525 in words is "twenty-seven billion, six hundred ninety-three million, nine hundred sixty-four thousand, five hundred twenty-five".