26434026861 has 16 divisors (see below), whose sum is σ = 38976202560. Its totient is φ = 15801160320.

The previous prime is 26434026859. The next prime is 26434026863. The reversal of 26434026861 is 16862043462.

It is an interprime number because it is at equal distance from previous prime (26434026859) and next prime (26434026863).

It is not a de Polignac number, because 26434026861 - 2¹ = 26434026859 is a prime.

It is a super-3 number, since 3×26434026861³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26434026863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5484106 + ... + 5488923.

It is an arithmetic number, because the mean of its divisors is an integer number (2436012660).

Almost surely, 2^26434026861 is an apocalyptic number.

It is an amenable number.

26434026861 is a deficient number, since it is larger than the sum of its proper divisors (12542175699).

26434026861 is a wasteful number, since it uses less digits than its factorization.

26434026861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10973116.

The product of its (nonzero) digits is 331776, while the sum is 42.

It can be divided in two parts, 264 and 34026861, that added together give a triangular number (34027125 = T₈₂₄₉).

The spelling of 26434026861 in words is "twenty-six billion, four hundred thirty-four million, twenty-six thousand, eight hundred sixty-one".