76530757645 has 32 divisors (see below), whose sum is σ = 95904829440. Its totient is φ = 58579584000.

The previous prime is 76530757621. The next prime is 76530757649. The reversal of 76530757645 is 54675703567.

It is a happy number.

It is not a de Polignac number, because 76530757645 - 2¹¹ = 76530755597 is a prime.

It is a super-3 number, since 3×76530757645³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76530757649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2766241 + ... + 2793769.

It is an arithmetic number, because the mean of its divisors is an integer number (2997025920).

Almost surely, 2^76530757645 is an apocalyptic number.

It is an amenable number.

76530757645 is a deficient number, since it is larger than the sum of its proper divisors (19374071795).

76530757645 is a wasteful number, since it uses less digits than its factorization.

76530757645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27837.

The product of its (nonzero) digits is 18522000, while the sum is 55.

The spelling of 76530757645 in words is "seventy-six billion, five hundred thirty million, seven hundred fifty-seven thousand, six hundred forty-five".