26551764401 has 4 divisors (see below), whose sum is σ = 26554220400. Its totient is φ = 26549308404.

The previous prime is 26551764383. The next prime is 26551764403. The reversal of 26551764401 is 10446715562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26551764401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26551764403) 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, 1211711 + ... + 1233428.

It is an arithmetic number, because the mean of its divisors is an integer number (6638555100).

Almost surely, 2^26551764401 is an apocalyptic number.

It is an amenable number.

26551764401 is a deficient number, since it is larger than the sum of its proper divisors (2455999).

26551764401 is a wasteful number, since it uses less digits than its factorization.

26551764401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455998.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 26551764401 in words is "twenty-six billion, five hundred fifty-one million, seven hundred sixty-four thousand, four hundred one".