26047801678 has 4 divisors (see below), whose sum is σ = 39071702520. Its totient is φ = 13023900838.

The previous prime is 26047801657. The next prime is 26047801699. The reversal of 26047801678 is 87610874062.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (26047801657) and next prime (26047801699).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511950418 + ... + 6511950421.

It is an arithmetic number, because the mean of its divisors is an integer number (9767925630).

Almost surely, 2^26047801678 is an apocalyptic number.

26047801678 is a deficient number, since it is larger than the sum of its proper divisors (13023900842).

26047801678 is a wasteful number, since it uses less digits than its factorization.

26047801678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13023900841.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 26047801678 in words is "twenty-six billion, forty-seven million, eight hundred one thousand, six hundred seventy-eight".