26161548407 has 4 divisors (see below), whose sum is σ = 26193414696. Its totient is φ = 26129682120.

The previous prime is 26161548403. The next prime is 26161548433. The reversal of 26161548407 is 70484516162.

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

It is a cyclic number.

It is not a de Polignac number, because 26161548407 - 2² = 26161548403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161548403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15931913 + ... + 15933554.

It is an arithmetic number, because the mean of its divisors is an integer number (6548353674).

Almost surely, 2^26161548407 is an apocalyptic number.

26161548407 is a deficient number, since it is larger than the sum of its proper divisors (31866289).

26161548407 is an equidigital number, since it uses as much as digits as its factorization.

26161548407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31866288.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 26161548407 in words is "twenty-six billion, one hundred sixty-one million, five hundred forty-eight thousand, four hundred seven".