2111550161504 has 96 divisors (see below), whose sum is σ = 4792951328256. Its totient is φ = 896983372800.

The previous prime is 2111550161473. The next prime is 2111550161519. The reversal of 2111550161504 is 4051610551112.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15389267 + ... + 15525869.

It is an arithmetic number, because the mean of its divisors is an integer number (49926576336).

Almost surely, 2^{2111550161504} 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 2111550161504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396475664128).

2111550161504 is an abundant number, since it is smaller than the sum of its proper divisors (2681401166752).

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

2111550161504 is a wasteful number, since it uses less digits than its factorization.

2111550161504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137228 (or 137220 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 32.

The spelling of 2111550161504 in words is "two trillion, one hundred eleven billion, five hundred fifty million, one hundred sixty-one thousand, five hundred four".