646958387135370 has 32 divisors (see below), whose sum is σ = 1585736302088448. Its totient is φ = 168851550684608.

The previous prime is 646958387135339. The next prime is 646958387135381. The reversal of 646958387135370 is 73531783859646.

646958387135370 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 = 646958387135292 and 646958387135301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229417866369 + ... + 229417869188.

It is an arithmetic number, because the mean of its divisors is an integer number (49554259440264).

Almost surely, 2^{646958387135370} is an apocalyptic number.

646958387135370 is an abundant number, since it is smaller than the sum of its proper divisors (938777914953078).

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

646958387135370 is a wasteful number, since it uses less digits than its factorization.

646958387135370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458835735614.

The product of its (nonzero) digits is 2743372800, while the sum is 75.

The spelling of 646958387135370 in words is "six hundred forty-six trillion, nine hundred fifty-eight billion, three hundred eighty-seven million, one hundred thirty-five thousand, three hundred seventy".