26275403878 has 4 divisors (see below), whose sum is σ = 39413105820. Its totient is φ = 13137701938.

The previous prime is 26275403857. The next prime is 26275403879. The reversal of 26275403878 is 87830457262.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26275403879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6568850968 + ... + 6568850971.

It is an arithmetic number, because the mean of its divisors is an integer number (9853276455).

Almost surely, 2^26275403878 is an apocalyptic number.

26275403878 is a deficient number, since it is larger than the sum of its proper divisors (13137701942).

26275403878 is a wasteful number, since it uses less digits than its factorization.

26275403878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13137701941.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 26275403878 in words is "twenty-six billion, two hundred seventy-five million, four hundred three thousand, eight hundred seventy-eight".