26551565419 has 4 divisors (see below), whose sum is σ = 26553604896. Its totient is φ = 26549525944.

The previous prime is 26551565399. The next prime is 26551565423. The reversal of 26551565419 is 91456515562.

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 26551565419 - 2¹⁹ = 26551041131 is a prime.

It is a super-2 number, since 2×26551565419² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26551565489) 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, 1000084 + ... + 1026289.

It is an arithmetic number, because the mean of its divisors is an integer number (6638401224).

Almost surely, 2^26551565419 is an apocalyptic number.

26551565419 is a deficient number, since it is larger than the sum of its proper divisors (2039477).

26551565419 is a wasteful number, since it uses less digits than its factorization.

26551565419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039476.

The product of its digits is 1620000, while the sum is 49.

The spelling of 26551565419 in words is "twenty-six billion, five hundred fifty-one million, five hundred sixty-five thousand, four hundred nineteen".