75066139974 has 64 divisors (see below), whose sum is σ = 172339015680. Its totient is φ = 21352701600.

The previous prime is 75066139943. The next prime is 75066139979. The reversal of 75066139974 is 47993166057.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75066139979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18528249 + ... + 18532299.

It is an arithmetic number, because the mean of its divisors is an integer number (2692797120).

Almost surely, 2^75066139974 is an apocalyptic number.

75066139974 is an abundant number, since it is smaller than the sum of its proper divisors (97272875706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75066139974 is a wasteful number, since it uses less digits than its factorization.

75066139974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905.

The product of its (nonzero) digits is 8573040, while the sum is 57.

The spelling of 75066139974 in words is "seventy-five billion, sixty-six million, one hundred thirty-nine thousand, nine hundred seventy-four".