1601385385528 has 32 divisors (see below), whose sum is σ = 3004260998400. Its totient is φ = 800249269248.

The previous prime is 1601385385493. The next prime is 1601385385549. The reversal of 1601385385528 is 8255835831061.

It is a super-2 number, since 2×1601385385528² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195072688 + ... + 195080896.

It is an arithmetic number, because the mean of its divisors is an integer number (93883156200).

Almost surely, 2^{1601385385528} is an apocalyptic number.

It is an amenable number.

1601385385528 is a deficient number, since it is larger than the sum of its proper divisors (1402875612872).

1601385385528 is a wasteful number, since it uses less digits than its factorization.

1601385385528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18751 (or 18747 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 1601385385528 in words is "one trillion, six hundred one billion, three hundred eighty-five million, three hundred eighty-five thousand, five hundred twenty-eight".