213569423078 has 16 divisors (see below), whose sum is σ = 350977148496. Its totient is φ = 96660368640.

The previous prime is 213569423077. The next prime is 213569423083. The reversal of 213569423078 is 870324965312.

213569423078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213569423078² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213569423077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20826851 + ... + 20837102.

It is an arithmetic number, because the mean of its divisors is an integer number (21936071781).

It is a 1-persistent number, because it is pandigital, but 2⋅213569423078 = 427138846156 is not.

Almost surely, 2^213569423078 is an apocalyptic number.

213569423078 is a deficient number, since it is larger than the sum of its proper divisors (137407725418).

213569423078 is a wasteful number, since it uses less digits than its factorization.

213569423078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41664199.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 213569423078 in words is "two hundred thirteen billion, five hundred sixty-nine million, four hundred twenty-three thousand, seventy-eight".