26106923978 has 16 divisors (see below), whose sum is σ = 40573923840. Its totient is φ = 12585414000.

The previous prime is 26106923903. The next prime is 26106924001. The reversal of 26106923978 is 87932960162.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765998 + ... + 799353.

It is an arithmetic number, because the mean of its divisors is an integer number (2535870240).

Almost surely, 2^26106923978 is an apocalyptic number.

26106923978 is a deficient number, since it is larger than the sum of its proper divisors (14466999862).

26106923978 is a wasteful number, since it uses less digits than its factorization.

26106923978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565653.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 26106923978 in words is "twenty-six billion, one hundred six million, nine hundred twenty-three thousand, nine hundred seventy-eight".