2051501616 has 60 divisors (see below), whose sum is σ = 5761068768. Its totient is φ = 681485952.

The previous prime is 2051501533. The next prime is 2051501651. The reversal of 2051501616 is 6161051502.

It is a happy number.

2051501616 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2051501616² = 8417317760901222912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2051501616.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17881 + ... + 66503.

Almost surely, 2^2051501616 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 2051501616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880534384).

2051501616 is an abundant number, since it is smaller than the sum of its proper divisors (3709567152).

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

2051501616 is a wasteful number, since it uses less digits than its factorization.

2051501616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48930 (or 48921 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 2051501616 is about 45293.5052297788. The cubic root of 2051501616 is about 1270.6441884522.

The spelling of 2051501616 in words is "two billion, fifty-one million, five hundred one thousand, six hundred sixteen".