643124544787396 has 24 divisors (see below), whose sum is σ = 1286554539606336. Its totient is φ = 275559351330720.

The previous prime is 643124544787357. The next prime is 643124544787409. The reversal of 643124544787396 is 693787445421346.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2727112411 + ... + 2727348226.

It is an arithmetic number, because the mean of its divisors is an integer number (53606439150264).

Almost surely, 2^{643124544787396} is an apocalyptic number.

It is an amenable number.

643124544787396 is an abundant number, since it is smaller than the sum of its proper divisors (643429994818940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643124544787396 is a wasteful number, since it uses less digits than its factorization.

643124544787396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454464859 (or 5454464857 counting only the distinct ones).

The product of its digits is 2926264320, while the sum is 73.

The spelling of 643124544787396 in words is "six hundred forty-three trillion, one hundred twenty-four billion, five hundred forty-four million, seven hundred eighty-seven thousand, three hundred ninety-six".