78213465542158 has 16 divisors (see below), whose sum is σ = 120154906943280. Its totient is φ = 38163440984256.

The previous prime is 78213465542137. The next prime is 78213465542161. The reversal of 78213465542158 is 85124556431287.

78213465542158 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 2×78213465542158² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78213465542096 and 78213465542105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402674785 + ... + 402868972.

It is an arithmetic number, because the mean of its divisors is an integer number (7509681683955).

Almost surely, 2^{78213465542158} is an apocalyptic number.

78213465542158 is a deficient number, since it is larger than the sum of its proper divisors (41941441401122).

78213465542158 is a wasteful number, since it uses less digits than its factorization.

78213465542158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805544931.

The product of its digits is 64512000, while the sum is 61.

The spelling of 78213465542158 in words is "seventy-eight trillion, two hundred thirteen billion, four hundred sixty-five million, five hundred forty-two thousand, one hundred fifty-eight".