26545490613 has 32 divisors (see below), whose sum is σ = 40304563200. Its totient is φ = 17258231088.

The previous prime is 26545490603. The next prime is 26545490627. The reversal of 26545490613 is 31609454562.

26545490613 is a `hidden beast` number, since 2 + 6 + 545 + 4 + 90 + 6 + 13 = 666.

It is not a de Polignac number, because 26545490613 - 2¹³ = 26545482421 is a prime.

It is a super-2 number, since 2×26545490613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545490603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733498 + ... + 768836.

It is an arithmetic number, because the mean of its divisors is an integer number (1259517600).

Almost surely, 2^26545490613 is an apocalyptic number.

It is an amenable number.

26545490613 is a deficient number, since it is larger than the sum of its proper divisors (13759072587).

26545490613 is a wasteful number, since it uses less digits than its factorization.

26545490613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36038 (or 36032 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 26545490613 in words is "twenty-six billion, five hundred forty-five million, four hundred ninety thousand, six hundred thirteen".