26506615256103 has 4 divisors (see below), whose sum is σ = 35342153674808. Its totient is φ = 17671076837400.

The previous prime is 26506615256087. The next prime is 26506615256113. The reversal of 26506615256103 is 30165251660562.

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

It is not a de Polignac number, because 26506615256103 - 2⁴ = 26506615256087 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 (26506615256113) 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, 4417769209348 + ... + 4417769209353.

It is an arithmetic number, because the mean of its divisors is an integer number (8835538418702).

Almost surely, 2^{26506615256103} is an apocalyptic number.

26506615256103 is a deficient number, since it is larger than the sum of its proper divisors (8835538418705).

26506615256103 is an equidigital number, since it uses as much as digits as its factorization.

26506615256103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8835538418704.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 26506615256103 in words is "twenty-six trillion, five hundred six billion, six hundred fifteen million, two hundred fifty-six thousand, one hundred three".