26764816401 has 6 divisors (see below), whose sum is σ = 38660290370. Its totient is φ = 17843210928.

The previous prime is 26764816391. The next prime is 26764816411. The reversal of 26764816401 is 10461846762.

It is an interprime number because it is at equal distance from previous prime (26764816391) and next prime (26764816411).

It can be written as a sum of positive squares in only one way, i.e., 26717537025 + 47279376 = 163455^2 + 6876^2 .

It is not a de Polignac number, because 26764816401 - 2¹⁰ = 26764815377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26764816411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1486934236 + ... + 1486934253.

Almost surely, 2^26764816401 is an apocalyptic number.

It is an amenable number.

26764816401 is a deficient number, since it is larger than the sum of its proper divisors (11895473969).

26764816401 is a wasteful number, since it uses less digits than its factorization.

26764816401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973868495 (or 2973868492 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 26764816401 in words is "twenty-six billion, seven hundred sixty-four million, eight hundred sixteen thousand, four hundred one".