643265150056 has 32 divisors (see below), whose sum is σ = 1223682854400. Its totient is φ = 316953967680.

The previous prime is 643265150053. The next prime is 643265150107. The reversal of 643265150056 is 650051562346.

643265150056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 643265149994 and 643265150021.

It is not an unprimeable number, because it can be changed into a prime (643265150053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952990 + ... + 1481458.

It is an arithmetic number, because the mean of its divisors is an integer number (38240089200).

Almost surely, 2^643265150056 is an apocalyptic number.

It is an amenable number.

643265150056 is a deficient number, since it is larger than the sum of its proper divisors (580417704344).

643265150056 is a wasteful number, since it uses less digits than its factorization.

643265150056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530689 (or 530685 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 643265150056 in words is "six hundred forty-three billion, two hundred sixty-five million, one hundred fifty thousand, fifty-six".