75744920723878 has 32 divisors (see below), whose sum is σ = 131931134696448. Its totient is φ = 31942497787200.

The previous prime is 75744920723873. The next prime is 75744920723929. The reversal of 75744920723878 is 87832702944757.

It is a self number, because there is not a number n which added to its sum of digits gives 75744920723878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75744920723873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43465743 + ... + 45174778.

It is an arithmetic number, because the mean of its divisors is an integer number (4122847959264).

Almost surely, 2^{75744920723878} is an apocalyptic number.

75744920723878 is a deficient number, since it is larger than the sum of its proper divisors (56186213972570).

75744920723878 is a wasteful number, since it uses less digits than its factorization.

75744920723878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88641508.

The product of its (nonzero) digits is 1327656960, while the sum is 73.

The spelling of 75744920723878 in words is "seventy-five trillion, seven hundred forty-four billion, nine hundred twenty million, seven hundred twenty-three thousand, eight hundred seventy-eight".