2051113500 has 288 divisors, whose sum is σ = 6766835712. Its totient is φ = 522547200.

The previous prime is 2051113499. The next prime is 2051113501. The reversal of 2051113500 is 53111502.

2051113500 is a `hidden beast` number, since 2 + 0 + 51 + 113 + 500 = 666.

It is an interprime number because it is at equal distance from previous prime (2051113499) and next prime (2051113501).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051113501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16150437 + ... + 16150563.

Almost surely, 2^2051113500 is an apocalyptic number.

2051113500 is a gapful number since it is divisible by the number (20) 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 2051113500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3383417856).

2051113500 is an abundant number, since it is smaller than the sum of its proper divisors (4715722212).

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

2051113500 is a wasteful number, since it uses less digits than its factorization.

2051113500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 2051113500 is about 45289.2205717873. The cubic root of 2051113500 is about 1270.5640539077.

The spelling of 2051113500 in words is "two billion, fifty-one million, one hundred thirteen thousand, five hundred".