20012041200040 has 64 divisors (see below), whose sum is σ = 47727066142800. Its totient is φ = 7525834948608.

The previous prime is 20012041200017. The next prime is 20012041200079. The reversal of 20012041200040 is 4000214021002.

It can be written as a sum of positive squares in 8 ways, for example, as 6326140493124 + 13685900706916 = 2515182^2 + 3699446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20012041199987 and 20012041200023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15207609 + ... + 16471048.

Almost surely, 2^{20012041200040} is an apocalyptic number.

20012041200040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012041200040 is an abundant number, since it is smaller than the sum of its proper divisors (27715024942760).

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

20012041200040 is a wasteful number, since it uses less digits than its factorization.

20012041200040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31679614 (or 31679610 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20012041200040 its reverse (4000214021002), we get a palindrome (24012255221042).

The spelling of 20012041200040 in words is "twenty trillion, twelve billion, forty-one million, two hundred thousand, forty".