2115040300040 has 16 divisors (see below), whose sum is σ = 4758840675180. Its totient is φ = 846016120000.

The previous prime is 2115040300033. The next prime is 2115040300057. The reversal of 2115040300040 is 400030405112.

It can be written as a sum of positive squares in 2 ways, for example, as 2014679327236 + 100360972804 = 1419394^2 + 316798^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2115040299985 and 2115040300021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26438003711 + ... + 26438003790.

Almost surely, 2^{2115040300040} is an apocalyptic number.

2115040300040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115040300040 is an abundant number, since it is smaller than the sum of its proper divisors (2643800375140).

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

2115040300040 is a wasteful number, since it uses less digits than its factorization.

2115040300040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52876007512 (or 52876007508 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 2115040300040 its reverse (400030405112), we get a palindrome (2515070705152).

The spelling of 2115040300040 in words is "two trillion, one hundred fifteen billion, forty million, three hundred thousand, forty".