20511108700152 has 32 divisors (see below), whose sum is σ = 58603167715200. Its totient is φ = 5860316771424.

The previous prime is 20511108700109. The next prime is 20511108700153. The reversal of 20511108700152 is 25100780111502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20511108700153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61044966202 + ... + 61044966537.

It is an arithmetic number, because the mean of its divisors is an integer number (1831348991100).

Almost surely, 2^{20511108700152} is an apocalyptic number.

It is an amenable number.

20511108700152 is an abundant number, since it is smaller than the sum of its proper divisors (38092059015048).

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

20511108700152 is a wasteful number, since it uses less digits than its factorization.

20511108700152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122089932755 (or 122089932751 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 33.

Adding to 20511108700152 its reverse (25100780111502), we get a palindrome (45611888811654).

The spelling of 20511108700152 in words is "twenty trillion, five hundred eleven billion, one hundred eight million, seven hundred thousand, one hundred fifty-two".