1601153215524 has 72 divisors (see below), whose sum is σ = 4134614964480. Its totient is φ = 522217798272.

The previous prime is 1601153215523. The next prime is 1601153215559. The reversal of 1601153215524 is 4255123511061.

1601153215524 is a `hidden beast` number, since 1 + 6 + 0 + 115 + 3 + 2 + 15 + 524 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1601153215523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6085897 + ... + 6343535.

It is an arithmetic number, because the mean of its divisors is an integer number (57425207840).

Almost surely, 2^{1601153215524} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601153215524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2067307482240).

1601153215524 is an abundant number, since it is smaller than the sum of its proper divisors (2533461748956).

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

1601153215524 is a wasteful number, since it uses less digits than its factorization.

1601153215524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261369 (or 261364 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

Adding to 1601153215524 its reverse (4255123511061), we get a palindrome (5856276726585).

The spelling of 1601153215524 in words is "one trillion, six hundred one billion, one hundred fifty-three million, two hundred fifteen thousand, five hundred twenty-four".