75400396865 has 8 divisors (see below), whose sum is σ = 93600492840. Its totient is φ = 58240306432.

The previous prime is 75400396853. The next prime is 75400396867. The reversal of 75400396865 is 56869300457.

It can be written as a sum of positive squares in 4 ways, for example, as 18623515024 + 56776881841 = 136468^2 + 238279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75400396865 - 2⁴ = 75400396849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75400396867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260001224 + ... + 260001513.

It is an arithmetic number, because the mean of its divisors is an integer number (11700061605).

Almost surely, 2^75400396865 is an apocalyptic number.

It is an amenable number.

75400396865 is a deficient number, since it is larger than the sum of its proper divisors (18200095975).

75400396865 is a wasteful number, since it uses less digits than its factorization.

75400396865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520002771.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 75400396865 in words is "seventy-five billion, four hundred million, three hundred ninety-six thousand, eight hundred sixty-five".