75390729897 has 32 divisors (see below), whose sum is σ = 115922534400. Its totient is φ = 42691239360.

The previous prime is 75390729881. The next prime is 75390729919. The reversal of 75390729897 is 79892709357.

It is not a de Polignac number, because 75390729897 - 2⁴ = 75390729881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75390729877) 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 31 ways as a sum of consecutive naturals, for example, 1320648 + ... + 1376550.

It is an arithmetic number, because the mean of its divisors is an integer number (3622579200).

Almost surely, 2^75390729897 is an apocalyptic number.

It is an amenable number.

75390729897 is a deficient number, since it is larger than the sum of its proper divisors (40531804503).

75390729897 is a wasteful number, since it uses less digits than its factorization.

75390729897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56493.

The product of its (nonzero) digits is 60011280, while the sum is 66.

The spelling of 75390729897 in words is "seventy-five billion, three hundred ninety million, seven hundred twenty-nine thousand, eight hundred ninety-seven".