27503699893609 has 9 divisors (see below), whose sum is σ = 27571397849541. Its totient is φ = 27436167793440.

The previous prime is 27503699893589. The next prime is 27503699893639. The reversal of 27503699893609 is 90639899630572.

It is a happy number.

The square root of 27503699893609 is 5244397.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3495385464025 + 24008314429584 = 1869595^2 + 4899828^2 .

It is not a de Polignac number, because 27503699893609 - 2¹¹ = 27503699891561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27503699893639) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2207884909 + ... + 2207897365.

It is an arithmetic number, because the mean of its divisors is an integer number (3063488649949).

Almost surely, 2^{27503699893609} is an apocalyptic number.

27503699893609 is the 5244397-th square number.

27503699893609 is the 2622199-th centered octagonal number.

It is an amenable number.

27503699893609 is a deficient number, since it is larger than the sum of its proper divisors (67697955932).

27503699893609 is an frugal number, since it uses more digits than its factorization.

27503699893609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25756 (or 12878 counting only the distinct ones).

The product of its (nonzero) digits is 1190427840, while the sum is 76.

The spelling of 27503699893609 in words is "twenty-seven trillion, five hundred three billion, six hundred ninety-nine million, eight hundred ninety-three thousand, six hundred nine".