20146640425527 has 16 divisors (see below), whose sum is σ = 33490519149312. Its totient is φ = 10465787233920.

The previous prime is 20146640425507. The next prime is 20146640425567. The reversal of 20146640425527 is 72552404664102.

It is not a de Polignac number, because 20146640425527 - 2⁸ = 20146640425271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146640425507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43607446578 + ... + 43607447039.

It is an arithmetic number, because the mean of its divisors is an integer number (2093157446832).

Almost surely, 2^{20146640425527} is an apocalyptic number.

20146640425527 is a deficient number, since it is larger than the sum of its proper divisors (13343878723785).

20146640425527 is a wasteful number, since it uses less digits than its factorization.

20146640425527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87214893638.

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 20146640425527 in words is "twenty trillion, one hundred forty-six billion, six hundred forty million, four hundred twenty-five thousand, five hundred twenty-seven".