646071541252 has 12 divisors (see below), whose sum is σ = 1156918806736. Its totient is φ = 315523310760.

The previous prime is 646071541231. The next prime is 646071541267. The reversal of 646071541252 is 252145170646.

646071541252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 646071541199 and 646071541208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878114774 + ... + 1878115117.

Almost surely, 2^646071541252 is an apocalyptic number.

It is an amenable number.

646071541252 is a deficient number, since it is larger than the sum of its proper divisors (510847265484).

646071541252 is a wasteful number, since it uses less digits than its factorization.

646071541252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756229938 (or 3756229936 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 646071541252 in words is "six hundred forty-six billion, seventy-one million, five hundred forty-one thousand, two hundred fifty-two".