26161365 has 32 divisors (see below), whose sum is σ = 43646976. Its totient is φ = 13366080.

The previous prime is 26161363. The next prime is 26161397. The reversal of 26161365 is 56316162.

26161365 = T₂₈₆ + T₂₈₇ + ... + T₅₆₄.

It is not a de Polignac number, because 26161365 - 2¹ = 26161363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26161363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58834 + ... + 59276.

It is an arithmetic number, because the mean of its divisors is an integer number (1363968).

Almost surely, 2^26161365 is an apocalyptic number.

It is an amenable number.

26161365 is a deficient number, since it is larger than the sum of its proper divisors (17485611).

26161365 is a wasteful number, since it uses less digits than its factorization.

26161365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609.

The product of its digits is 6480, while the sum is 30.

The square root of 26161365 is about 5114.8181785866. The cubic root of 26161365 is about 296.8612191572.

The spelling of 26161365 in words is "twenty-six million, one hundred sixty-one thousand, three hundred sixty-five".