26256340064621 has 8 divisors (see below), whose sum is σ = 26445742071840. Its totient is φ = 26066945307312.

The previous prime is 26256340064579. The next prime is 26256340064623. The reversal of 26256340064621 is 12646004365262.

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-26256340064621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26256340064623) 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, 5564771 + ... + 9136703.

It is an arithmetic number, because the mean of its divisors is an integer number (3305717758980).

Almost surely, 2^{26256340064621} is an apocalyptic number.

It is an amenable number.

26256340064621 is a deficient number, since it is larger than the sum of its proper divisors (189402007219).

26256340064621 is a wasteful number, since it uses less digits than its factorization.

26256340064621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624955.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 26256340064621 in words is "twenty-six trillion, two hundred fifty-six billion, three hundred forty million, sixty-four thousand, six hundred twenty-one".