78347374104135 has 32 divisors (see below), whose sum is σ = 132950412200448. Its totient is φ = 39313293909120.

The previous prime is 78347374104127. The next prime is 78347374104187. The reversal of 78347374104135 is 53140147374387.

It is a happy number.

It is not a de Polignac number, because 78347374104135 - 2³ = 78347374104127 is a prime.

It is a super-2 number, since 2×78347374104135² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1861403857 + ... + 1861445946.

It is an arithmetic number, because the mean of its divisors is an integer number (4154700381264).

Almost surely, 2^{78347374104135} is an apocalyptic number.

78347374104135 is a deficient number, since it is larger than the sum of its proper divisors (54603038096313).

78347374104135 is a wasteful number, since it uses less digits than its factorization.

78347374104135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722849895.

The product of its (nonzero) digits is 23708160, while the sum is 57.

The spelling of 78347374104135 in words is "seventy-eight trillion, three hundred forty-seven billion, three hundred seventy-four million, one hundred four thousand, one hundred thirty-five".