2051540201600 has 48 divisors (see below), whose sum is σ = 5067945412170. Its totient is φ = 820616079360.

The previous prime is 2051540201597. The next prime is 2051540201677. The reversal of 2051540201600 is 61020451502.

It can be written as a sum of positive squares in 3 ways, for example, as 1828098693184 + 223441508416 = 1352072^2 + 472696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2051540201600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320549957 + ... + 320556356.

Almost surely, 2^{2051540201600} is an apocalyptic number.

2051540201600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051540201600 is an abundant number, since it is smaller than the sum of its proper divisors (3016405210570).

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

2051540201600 is an equidigital number, since it uses as much as digits as its factorization.

2051540201600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641106337 (or 641106320 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 2051540201600 in words is "two trillion, fifty-one billion, five hundred forty million, two hundred one thousand, six hundred".