26440105156155 has 24 divisors (see below), whose sum is σ = 45838535783040. Its totient is φ = 14098613976960.

The previous prime is 26440105156111. The next prime is 26440105156159. The reversal of 26440105156155 is 55165150104462.

26440105156155 is a `hidden beast` number, since 2 + 6 + 4 + 4 + 0 + 10 + 5 + 15 + 615 + 5 = 666.

It is not a de Polignac number, because 26440105156155 - 2⁷ = 26440105156027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26440105156155.

It is not an unprimeable number, because it can be changed into a prime (26440105156159) 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 23 ways as a sum of consecutive naturals, for example, 57590475 + ... + 58047764.

It is an arithmetic number, because the mean of its divisors is an integer number (1909938990960).

Almost surely, 2^{26440105156155} is an apocalyptic number.

26440105156155 is a deficient number, since it is larger than the sum of its proper divisors (19398430626885).

26440105156155 is a wasteful number, since it uses less digits than its factorization.

26440105156155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115643331 (or 115643328 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 26440105156155 in words is "twenty-six trillion, four hundred forty billion, one hundred five million, one hundred fifty-six thousand, one hundred fifty-five".