64161660412 has 6 divisors (see below), whose sum is σ = 112282905728. Its totient is φ = 32080830204.

The previous prime is 64161660383. The next prime is 64161660461. The reversal of 64161660412 is 21406616146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8020207548 + ... + 8020207555.

Almost surely, 2^64161660412 is an apocalyptic number.

It is an amenable number.

64161660412 is a deficient number, since it is larger than the sum of its proper divisors (48121245316).

64161660412 is a wasteful number, since it uses less digits than its factorization.

64161660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16040415107 (or 16040415105 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 64161660412 in words is "sixty-four billion, one hundred sixty-one million, six hundred sixty thousand, four hundred twelve".