26610661445 has 4 divisors (see below), whose sum is σ = 31932793740. Its totient is φ = 21288529152.

The previous prime is 26610661421. The next prime is 26610661477. The reversal of 26610661445 is 54416601662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15683304289 + 10927357156 = 125233^2 + 104534^2 .

It is a cyclic number.

It is not a de Polignac number, because 26610661445 - 2¹⁰ = 26610660421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2661066140 + ... + 2661066149.

It is an arithmetic number, because the mean of its divisors is an integer number (7983198435).

Almost surely, 2^26610661445 is an apocalyptic number.

It is an amenable number.

26610661445 is a deficient number, since it is larger than the sum of its proper divisors (5322132295).

26610661445 is an equidigital number, since it uses as much as digits as its factorization.

26610661445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322132294.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 26610661445 in words is "twenty-six billion, six hundred ten million, six hundred sixty-one thousand, four hundred forty-five".