1601151521526 has 48 divisors (see below), whose sum is σ = 3509259811200. Its totient is φ = 527552049024.

The previous prime is 1601151521513. The next prime is 1601151521531. The reversal of 1601151521526 is 6251251511061.

1601151521526 is a `hidden beast` number, since 1 + 6 + 0 + 115 + 15 + 2 + 1 + 526 = 666.

It is a super-4 number, since 4×1601151521526⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4915740 + ... + 5231328.

It is an arithmetic number, because the mean of its divisors is an integer number (73109579400).

Almost surely, 2^{1601151521526} is an apocalyptic number.

1601151521526 is an abundant number, since it is smaller than the sum of its proper divisors (1908108289674).

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

1601151521526 is a wasteful number, since it uses less digits than its factorization.

1601151521526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318853 (or 318850 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The spelling of 1601151521526 in words is "one trillion, six hundred one billion, one hundred fifty-one million, five hundred twenty-one thousand, five hundred twenty-six".