20451026132264 has 256 divisors, whose sum is σ = 50752315514880. Its totient is φ = 7496171827200.

The previous prime is 20451026132203. The next prime is 20451026132311. The reversal of 20451026132264 is 46223162015402.

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 63 ways as a sum of consecutive naturals, for example, 290664689 + ... + 290735039.

It is an arithmetic number, because the mean of its divisors is an integer number (198251232480).

Almost surely, 2^{20451026132264} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20451026132264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25376157757440).

20451026132264 is an abundant number, since it is smaller than the sum of its proper divisors (30301289382616).

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

20451026132264 is a wasteful number, since it uses less digits than its factorization.

20451026132264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70760 (or 70756 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 20451026132264 its reverse (46223162015402), we get a palindrome (66674188147666).

The spelling of 20451026132264 in words is "twenty trillion, four hundred fifty-one billion, twenty-six million, one hundred thirty-two thousand, two hundred sixty-four".