2636788106988 has 144 divisors (see below), whose sum is σ = 8066595962880. Its totient is φ = 708953236992.

The previous prime is 2636788106987. The next prime is 2636788107011. The reversal of 2636788106988 is 8896018876362.

2636788106988 is a `hidden beast` number, since 2 + 6 + 367 + 88 + 106 + 9 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (2636788106987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33731733 + ... + 33809811.

It is an arithmetic number, because the mean of its divisors is an integer number (56018027520).

Almost surely, 2^{2636788106988} is an apocalyptic number.

2636788106988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2636788106988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4033297981440).

2636788106988 is an abundant number, since it is smaller than the sum of its proper divisors (5429807855892).

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

2636788106988 is a wasteful number, since it uses less digits than its factorization.

2636788106988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85996 (or 85991 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 72.

The spelling of 2636788106988 in words is "two trillion, six hundred thirty-six billion, seven hundred eighty-eight million, one hundred six thousand, nine hundred eighty-eight".