26276401389 has 16 divisors (see below), whose sum is σ = 40056307712. Its totient is φ = 15009057648.

The previous prime is 26276401357. The next prime is 26276401391. The reversal of 26276401389 is 98310467262.

It is not a de Polignac number, because 26276401389 - 2⁵ = 26276401357 is a prime.

It is a super-2 number, since 2×26276401389² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26276401189) 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, 197389 + ... + 302514.

It is an arithmetic number, because the mean of its divisors is an integer number (2503519232).

Almost surely, 2^26276401389 is an apocalyptic number.

It is an amenable number.

26276401389 is a deficient number, since it is larger than the sum of its proper divisors (13779906323).

26276401389 is a wasteful number, since it uses less digits than its factorization.

26276401389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502416.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 26276401389 in words is "twenty-six billion, two hundred seventy-six million, four hundred one thousand, three hundred eighty-nine".