75420402457 has 16 divisors (see below), whose sum is σ = 78387004800. Its totient is φ = 72478658560.

The previous prime is 75420402427. The next prime is 75420402469.

75420402457 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75420402457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75420402427) 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, 11615982 + ... + 11622472.

It is an arithmetic number, because the mean of its divisors is an integer number (4899187800).

Almost surely, 2^75420402457 is an apocalyptic number.

It is an amenable number.

75420402457 is a deficient number, since it is larger than the sum of its proper divisors (2966602343).

75420402457 is a wasteful number, since it uses less digits than its factorization.

75420402457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8336.

The product of its (nonzero) digits is 313600, while the sum is 40.

The spelling of 75420402457 in words is "seventy-five billion, four hundred twenty million, four hundred two thousand, four hundred fifty-seven".