75642003906 has 32 divisors (see below), whose sum is σ = 173511324288. Its totient is φ = 21535086720.

The previous prime is 75642003901. The next prime is 75642003929. The reversal of 75642003906 is 60930024657.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75642003901) 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 15 ways as a sum of consecutive naturals, for example, 3192825 + ... + 3216428.

It is an arithmetic number, because the mean of its divisors is an integer number (5422228884).

Almost surely, 2^75642003906 is an apocalyptic number.

75642003906 is an abundant number, since it is smaller than the sum of its proper divisors (97869320382).

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

75642003906 is a wasteful number, since it uses less digits than its factorization.

75642003906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409546.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 75642003906 in words is "seventy-five billion, six hundred forty-two million, three thousand, nine hundred six".