26590402947 has 4 divisors (see below), whose sum is σ = 35453870600. Its totient is φ = 17726935296.

The previous prime is 26590402921. The next prime is 26590402981. The reversal of 26590402947 is 74920409562.

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

It is not a de Polignac number, because 26590402947 - 2⁸ = 26590402691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26590402896 and 26590402905.

It is not an unprimeable number, because it can be changed into a prime (26590402247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4431733822 + ... + 4431733827.

It is an arithmetic number, because the mean of its divisors is an integer number (8863467650).

Almost surely, 2^26590402947 is an apocalyptic number.

26590402947 is a deficient number, since it is larger than the sum of its proper divisors (8863467653).

26590402947 is an equidigital number, since it uses as much as digits as its factorization.

26590402947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863467652.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 26590402947 in words is "twenty-six billion, five hundred ninety million, four hundred two thousand, nine hundred forty-seven".