26316425561 has 8 divisors (see below), whose sum is σ = 27869127624. Its totient is φ = 24764243200.

The previous prime is 26316425537. The next prime is 26316425609. The reversal of 26316425561 is 16552461362.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14500735561 + 11815690000 = 120419^2 + 108700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26316425561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26316425501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23150 + ... + 230583.

It is an arithmetic number, because the mean of its divisors is an integer number (3483640953).

Almost surely, 2^26316425561 is an apocalyptic number.

It is an amenable number.

26316425561 is a deficient number, since it is larger than the sum of its proper divisors (1552702063).

26316425561 is a wasteful number, since it uses less digits than its factorization.

26316425561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259851.

The product of its digits is 259200, while the sum is 41.

The spelling of 26316425561 in words is "twenty-six billion, three hundred sixteen million, four hundred twenty-five thousand, five hundred sixty-one".