20788038381451 has 32 divisors (see below), whose sum is σ = 23234964825600. Its totient is φ = 18435100185600.

The previous prime is 20788038381403. The next prime is 20788038381521. The reversal of 20788038381451 is 15418383088702.

It is a cyclic number.

It is not a de Polignac number, because 20788038381451 - 2²¹ = 20788036284299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20788039381451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2717742075 + ... + 2717749723.

It is an arithmetic number, because the mean of its divisors is an integer number (726092650800).

Almost surely, 2^{20788038381451} is an apocalyptic number.

20788038381451 is a deficient number, since it is larger than the sum of its proper divisors (2446926444149).

20788038381451 is a wasteful number, since it uses less digits than its factorization.

20788038381451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14307.

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 20788038381451 in words is "twenty trillion, seven hundred eighty-eight billion, thirty-eight million, three hundred eighty-one thousand, four hundred fifty-one".