20136500121702 has 16 divisors (see below), whose sum is σ = 40359982970880. Its totient is φ = 6697669585992.

The previous prime is 20136500121691. The next prime is 20136500121721. The reversal of 20136500121702 is 20712100563102.

It is a super-2 number, since 2×20136500121702² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20136500121702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3624277302 + ... + 3624282857.

It is an arithmetic number, because the mean of its divisors is an integer number (2522498935680).

Almost surely, 2^{20136500121702} is an apocalyptic number.

20136500121702 is an abundant number, since it is smaller than the sum of its proper divisors (20223482849178).

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

20136500121702 is a wasteful number, since it uses less digits than its factorization.

20136500121702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248560627.

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 20136500121702 its reverse (20712100563102), we get a palindrome (40848600684804).

The spelling of 20136500121702 in words is "twenty trillion, one hundred thirty-six billion, five hundred million, one hundred twenty-one thousand, seven hundred two".