26404531019 has 8 divisors (see below), whose sum is σ = 28047640608. Its totient is φ = 24771410560.

The previous prime is 26404531009. The next prime is 26404531033. The reversal of 26404531019 is 91013540462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26404531019 is a prime.

It is a super-2 number, since 2×26404531019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26404531019.

It is not an unprimeable number, because it can be changed into a prime (26404531009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2491832 + ... + 2502405.

It is an arithmetic number, because the mean of its divisors is an integer number (3505955076).

Almost surely, 2^26404531019 is an apocalyptic number.

26404531019 is a deficient number, since it is larger than the sum of its proper divisors (1643109589).

26404531019 is a wasteful number, since it uses less digits than its factorization.

26404531019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994565.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 26404531019 in words is "twenty-six billion, four hundred four million, five hundred thirty-one thousand, nineteen".