1601055155500 has 96 divisors (see below), whose sum is σ = 3610957529088. Its totient is φ = 619513272000.

The previous prime is 1601055155471. The next prime is 1601055155503. The reversal of 1601055155500 is 55515501061.

It is a super-2 number, since 2×1601055155500² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1601055155503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41008989 + ... + 41048011.

It is an arithmetic number, because the mean of its divisors is an integer number (37614140928).

Almost surely, 2^{1601055155500} is an apocalyptic number.

1601055155500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601055155500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1805478764544).

1601055155500 is an abundant number, since it is smaller than the sum of its proper divisors (2009902373588).

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

1601055155500 is a wasteful number, since it uses less digits than its factorization.

1601055155500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720 (or 41708 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 1601055155500 in words is "one trillion, six hundred one billion, fifty-five million, one hundred fifty-five thousand, five hundred".