26620532145 has 28 divisors (see below), whose sum is σ = 47895054516. Its totient is φ = 14197615200.

The previous prime is 26620532131. The next prime is 26620532161. The reversal of 26620532145 is 54123502662.

26620532145 is a `hidden beast` number, since 2 + 6 + 620 + 5 + 3 + 21 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3010058496 + 23610473649 = 54864^2 + 153657^2 .

It is not a de Polignac number, because 26620532145 - 2¹⁹ = 26620007857 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 3648006 + ... + 3655295.

Almost surely, 2^26620532145 is an apocalyptic number.

It is an amenable number.

26620532145 is a deficient number, since it is larger than the sum of its proper divisors (21274522371).

26620532145 is an frugal number, since it uses more digits than its factorization.

26620532145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303324 (or 7303309 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 26620532145 in words is "twenty-six billion, six hundred twenty million, five hundred thirty-two thousand, one hundred forty-five".