2151051616 has 96 divisors (see below), whose sum is σ = 5201667072. Its totient is φ = 854599680.

The previous prime is 2151051613. The next prime is 2151051619. The reversal of 2151051616 is 6161501512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2151051613) and next prime (2151051619).

It is a super-2 number, since 2×2151051616² = 9254046109392422912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151051611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250921 + ... + 259351.

It is an arithmetic number, because the mean of its divisors is an integer number (54184032).

Almost surely, 2^2151051616 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 2151051616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600833536).

2151051616 is an abundant number, since it is smaller than the sum of its proper divisors (3050615456).

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

2151051616 is a wasteful number, since it uses less digits than its factorization.

2151051616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532 (or 8524 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 2151051616 is about 46379.4309581306. The cubic root of 2151051616 is about 1290.8732776513.

The spelling of 2151051616 in words is "two billion, one hundred fifty-one million, fifty-one thousand, six hundred sixteen".