20486537726555 has 4 divisors (see below), whose sum is σ = 24583845271872. Its totient is φ = 16389230181240.

The previous prime is 20486537726539. The next prime is 20486537726597. The reversal of 20486537726555 is 55562773568402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20486537726555 - 2⁴ = 20486537726539 is a prime.

It is a super-2 number, since 2×20486537726555² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20486537726491 and 20486537726500.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2048653772651 + ... + 2048653772660.

It is an arithmetic number, because the mean of its divisors is an integer number (6145961317968).

Almost surely, 2^{20486537726555} is an apocalyptic number.

20486537726555 is a deficient number, since it is larger than the sum of its proper divisors (4097307545317).

20486537726555 is an equidigital number, since it uses as much as digits as its factorization.

20486537726555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097307545316.

The product of its (nonzero) digits is 423360000, while the sum is 65.

The spelling of 20486537726555 in words is "twenty trillion, four hundred eighty-six billion, five hundred thirty-seven million, seven hundred twenty-six thousand, five hundred fifty-five".