26157656011 has 4 divisors (see below), whose sum is σ = 26165700352. Its totient is φ = 26149611672.

The previous prime is 26157655991. The next prime is 26157656017. The reversal of 26157656011 is 11065675162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11065675162 = 2 ⋅5532837581.

It is a cyclic number.

It is not a de Polignac number, because 26157656011 - 2⁷ = 26157655883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26157656017) 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, 4017291 + ... + 4023796.

It is an arithmetic number, because the mean of its divisors is an integer number (6541425088).

Almost surely, 2^26157656011 is an apocalyptic number.

26157656011 is a deficient number, since it is larger than the sum of its proper divisors (8044341).

26157656011 is an equidigital number, since it uses as much as digits as its factorization.

26157656011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044340.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 26157656011 in words is "twenty-six billion, one hundred fifty-seven million, six hundred fifty-six thousand, eleven".