26401447071 has 10 divisors (see below), whose sum is σ = 39439198832. Its totient is φ = 17600964660.

The previous prime is 26401447021. The next prime is 26401447091. The reversal of 26401447071 is 17074410462.

It is a happy number.

26401447071 is a `hidden beast` number, since 2 + 640 + 1 + 4 + 4 + 7 + 0 + 7 + 1 = 666.

It is not a de Polignac number, because 26401447071 - 2⁹ = 26401446559 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 (26401447021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 162971815 + ... + 162971976.

Almost surely, 2^26401447071 is an apocalyptic number.

26401447071 is a deficient number, since it is larger than the sum of its proper divisors (13037751761).

26401447071 is an equidigital number, since it uses as much as digits as its factorization.

26401447071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325943803 (or 325943794 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 26401447071 in words is "twenty-six billion, four hundred one million, four hundred forty-seven thousand, seventy-one".