20556270056415 has 16 divisors (see below), whose sum is σ = 33149008723968. Its totient is φ = 10877018485536.

The previous prime is 20556270056411. The next prime is 20556270056417. The reversal of 20556270056415 is 51465007265502.

It is not a de Polignac number, because 20556270056415 - 2² = 20556270056411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20556270056411) 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 15 ways as a sum of consecutive naturals, for example, 5395344567 + ... + 5395348376.

It is an arithmetic number, because the mean of its divisors is an integer number (2071813045248).

Almost surely, 2^{20556270056415} is an apocalyptic number.

20556270056415 is a deficient number, since it is larger than the sum of its proper divisors (12592738667553).

20556270056415 is a wasteful number, since it uses less digits than its factorization.

20556270056415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10790693078.

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 20556270056415 in words is "twenty trillion, five hundred fifty-six billion, two hundred seventy million, fifty-six thousand, four hundred fifteen".