26440193039 has 4 divisors (see below), whose sum is σ = 28474054056. Its totient is φ = 24406332024.

The previous prime is 26440193029. The next prime is 26440193093. The reversal of 26440193039 is 93039104462.

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 26440193039 - 2⁴ = 26440193023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26440192987 and 26440193005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26440193029) 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, 1016930489 + ... + 1016930514.

It is an arithmetic number, because the mean of its divisors is an integer number (7118513514).

Almost surely, 2^26440193039 is an apocalyptic number.

26440193039 is a deficient number, since it is larger than the sum of its proper divisors (2033861017).

26440193039 is a wasteful number, since it uses less digits than its factorization.

26440193039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033861016.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 26440193039 in words is "twenty-six billion, four hundred forty million, one hundred ninety-three thousand, thirty-nine".