76430633643 has 64 divisors (see below), whose sum is σ = 139436774400. Its totient is φ = 40293054720.

The previous prime is 76430633603. The next prime is 76430633683. The reversal of 76430633643 is 34633603467.

76430633643 is a `hidden beast` number, since 7 + 6 + 4 + 3 + 0 + 633 + 6 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (76430633603) and next prime (76430633683).

It is not a de Polignac number, because 76430633643 - 2⁹ = 76430633131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76430633603) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5125228 + ... + 5140118.

It is an arithmetic number, because the mean of its divisors is an integer number (2178699600).

Almost surely, 2^76430633643 is an apocalyptic number.

76430633643 is a deficient number, since it is larger than the sum of its proper divisors (63006140757).

76430633643 is a wasteful number, since it uses less digits than its factorization.

76430633643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17009 (or 17003 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 45.

The spelling of 76430633643 in words is "seventy-six billion, four hundred thirty million, six hundred thirty-three thousand, six hundred forty-three".