78755475357 has 48 divisors (see below), whose sum is σ = 133220833200. Its totient is φ = 44381177856.

The previous prime is 78755475347. The next prime is 78755475413. The reversal of 78755475357 is 75357455787.

78755475357 is a `hidden beast` number, since 7 + 8 + 7 + 55 + 47 + 535 + 7 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 6376182201 + 72379293156 = 79851^2 + 269034^2 .

It is not a de Polignac number, because 78755475357 - 2⁷ = 78755475229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78755475294 and 78755475303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78755475347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 461482 + ... + 608667.

It is an arithmetic number, because the mean of its divisors is an integer number (2775434025).

Almost surely, 2^78755475357 is an apocalyptic number.

It is an amenable number.

78755475357 is a deficient number, since it is larger than the sum of its proper divisors (54465357843).

78755475357 is a wasteful number, since it uses less digits than its factorization.

78755475357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070222 (or 1070219 counting only the distinct ones).

The product of its digits is 144060000, while the sum is 63.

The spelling of 78755475357 in words is "seventy-eight billion, seven hundred fifty-five million, four hundred seventy-five thousand, three hundred fifty-seven".