3846657985520 has 80 divisors (see below), whose sum is σ = 10221915422208. Its totient is φ = 1318751504640.

The previous prime is 3846657985483. The next prime is 3846657985537. The reversal of 3846657985520 is 255897566483.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 7114997 + ... + 7636523.

Almost surely, 2^{3846657985520} is an apocalyptic number.

It is an amenable number.

3846657985520 is an abundant number, since it is smaller than the sum of its proper divisors (6375257436688).

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

3846657985520 is a wasteful number, since it uses less digits than its factorization.

3846657985520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534718 (or 534712 counting only the distinct ones).

The product of its (nonzero) digits is 435456000, while the sum is 68.

The spelling of 3846657985520 in words is "three trillion, eight hundred forty-six billion, six hundred fifty-seven million, nine hundred eighty-five thousand, five hundred twenty".