26380516457 has 8 divisors (see below), whose sum is σ = 26813055360. Its totient is φ = 25951370400.

The previous prime is 26380516397. The next prime is 26380516499. The reversal of 26380516457 is 75461508362.

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

It is a cyclic number.

It is not a de Polignac number, because 26380516457 - 2¹⁰ = 26380515433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26380516157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832532 + ... + 863637.

It is an arithmetic number, because the mean of its divisors is an integer number (3351631920).

Almost surely, 2^26380516457 is an apocalyptic number.

It is an amenable number.

26380516457 is a deficient number, since it is larger than the sum of its proper divisors (432538903).

26380516457 is a wasteful number, since it uses less digits than its factorization.

26380516457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696423.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 26380516457 in words is "twenty-six billion, three hundred eighty million, five hundred sixteen thousand, four hundred fifty-seven".