26403743251 has 4 divisors (see below), whose sum is σ = 27551732112. Its totient is φ = 25255754392.

The previous prime is 26403743231. The next prime is 26403743269. The reversal of 26403743251 is 15234730462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26403743251 is a prime.

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 26403743251.

It is not an unprimeable number, because it can be changed into a prime (26403743231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573994396 + ... + 573994441.

It is an arithmetic number, because the mean of its divisors is an integer number (6887933028).

Almost surely, 2^26403743251 is an apocalyptic number.

26403743251 is a deficient number, since it is larger than the sum of its proper divisors (1147988861).

26403743251 is a wasteful number, since it uses less digits than its factorization.

26403743251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147988860.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 26403743251 in words is "twenty-six billion, four hundred three million, seven hundred forty-three thousand, two hundred fifty-one".