2051602660 has 24 divisors (see below), whose sum is σ = 4311793080. Its totient is φ = 819988224.

The previous prime is 2051602643. The next prime is 2051602673. The reversal of 2051602660 is 662061502.

It can be written as a sum of positive squares in 4 ways, for example, as 617920164 + 1433682496 = 24858^2 + 37864^2 .

It is a super-3 number, since 3×2051602660³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14625 + ... + 65704.

It is an arithmetic number, because the mean of its divisors is an integer number (179658045).

Almost surely, 2^2051602660 is an apocalyptic number.

2051602660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051602660 is an abundant number, since it is smaller than the sum of its proper divisors (2260190420).

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

2051602660 is a wasteful number, since it uses less digits than its factorization.

2051602660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81615 (or 81613 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2051602660 is about 45294.6206519052. The cubic root of 2051602660 is about 1270.6650494096.

The spelling of 2051602660 in words is "two billion, fifty-one million, six hundred two thousand, six hundred sixty".