26018078378 has 8 divisors (see below), whose sum is σ = 39029147940. Its totient is φ = 13008362400.

The previous prime is 26018078323. The next prime is 26018078407. The reversal of 26018078378 is 87387081062.

It can be written as a sum of positive squares in 2 ways, for example, as 25078839769 + 939238609 = 158363^2 + 30647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×26018078378² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288893 + ... + 368096.

Almost surely, 2^26018078378 is an apocalyptic number.

26018078378 is a deficient number, since it is larger than the sum of its proper divisors (13011069562).

26018078378 is a wasteful number, since it uses less digits than its factorization.

26018078378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676792.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 26018078378 in words is "twenty-six billion, eighteen million, seventy-eight thousand, three hundred seventy-eight".