26878461519 has 72 divisors (see below), whose sum is σ = 45764051472. Its totient is φ = 13982492160.

The previous prime is 26878461517. The next prime is 26878461539. The reversal of 26878461519 is 91516487862.

It is not a de Polignac number, because 26878461519 - 2¹ = 26878461517 is a prime.

It is a super-2 number, since 2×26878461519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26878461517) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1806129 + ... + 1820949.

It is an arithmetic number, because the mean of its divisors is an integer number (635611826).

Almost surely, 2^26878461519 is an apocalyptic number.

26878461519 is a deficient number, since it is larger than the sum of its proper divisors (18885589953).

26878461519 is a wasteful number, since it uses less digits than its factorization.

26878461519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937 (or 14917 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 26878461519 in words is "twenty-six billion, eight hundred seventy-eight million, four hundred sixty-one thousand, five hundred nineteen".