26400185642 has 16 divisors (see below), whose sum is σ = 40115623680. Its totient is φ = 13029232752.

The previous prime is 26400185629. The next prime is 26400185653. The reversal of 26400185642 is 24658100462.

26400185642 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 26400185596 and 26400185605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172898 + ... + 287565.

It is an arithmetic number, because the mean of its divisors is an integer number (2507226480).

Almost surely, 2^26400185642 is an apocalyptic number.

26400185642 is a deficient number, since it is larger than the sum of its proper divisors (13715438038).

26400185642 is a wasteful number, since it uses less digits than its factorization.

26400185642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460837.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 26400185642 in words is "twenty-six billion, four hundred million, one hundred eighty-five thousand, six hundred forty-two".