75645756457 has 8 divisors (see below), whose sum is σ = 79629694560. Its totient is φ = 71662076640.

The previous prime is 75645756451. The next prime is 75645756463. The reversal of 75645756457 is 75465754657.

It is an interprime number because it is at equal distance from previous prime (75645756451) and next prime (75645756463).

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 75645756457 - 2¹¹ = 75645754409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75645756395 and 75645756404.

It is not an unprimeable number, because it can be changed into a prime (75645756451) 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 7 ways as a sum of consecutive naturals, for example, 927813 + ... + 1006045.

It is an arithmetic number, because the mean of its divisors is an integer number (9953711820).

Almost surely, 2^75645756457 is an apocalyptic number.

It is an amenable number.

75645756457 is a deficient number, since it is larger than the sum of its proper divisors (3983938103).

75645756457 is a wasteful number, since it uses less digits than its factorization.

75645756457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129143.

The product of its digits is 123480000, while the sum is 61.

The spelling of 75645756457 in words is "seventy-five billion, six hundred forty-five million, seven hundred fifty-six thousand, four hundred fifty-seven".