2111550072 has 16 divisors (see below), whose sum is σ = 5278875240. Its totient is φ = 703850016.

The previous prime is 2111550041. The next prime is 2111550083. The reversal of 2111550072 is 2700551112.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 87981253 = 2111550072 / (2 + 1 + 1 + 1 + 5 + 5 + 0 + 0 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43990603 + ... + 43990650.

Almost surely, 2^2111550072 is an apocalyptic number.

It is an amenable number.

2111550072 is an abundant number, since it is smaller than the sum of its proper divisors (3167325168).

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

2111550072 is a wasteful number, since it uses less digits than its factorization.

2111550072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87981262 (or 87981258 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 2111550072 is about 45951.6057608437. The cubic root of 2111550072 is about 1282.9226169731.

The spelling of 2111550072 in words is "two billion, one hundred eleven million, five hundred fifty thousand, seventy-two".