64660661962 has 16 divisors (see below), whose sum is σ = 104469248520. Its totient is φ = 29838408192.

The previous prime is 64660661959. The next prime is 64660662083. The reversal of 64660661962 is 26916606646.

64660661962 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 50927400241 + 13733261721 = 225671^2 + 117189^2 .

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, 45903 + ... + 362530.

Almost surely, 2^64660661962 is an apocalyptic number.

64660661962 is a deficient number, since it is larger than the sum of its proper divisors (39808586558).

64660661962 is a wasteful number, since it uses less digits than its factorization.

64660661962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414537.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 64660661962 in words is "sixty-four billion, six hundred sixty million, six hundred sixty-one thousand, nine hundred sixty-two".