20936215547634 has 16 divisors (see below), whose sum is σ = 41872476206880. Its totient is φ = 6978730997280.

The previous prime is 20936215547609. The next prime is 20936215547647. The reversal of 20936215547634 is 43674551263902.

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 7 ways as a sum of consecutive naturals, for example, 8979049 + ... + 11067779.

It is an arithmetic number, because the mean of its divisors is an integer number (2617029762930).

Almost surely, 2^{20936215547634} is an apocalyptic number.

20936215547634 is an abundant number, since it is smaller than the sum of its proper divisors (20936260659246).

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

20936215547634 is a wasteful number, since it uses less digits than its factorization.

20936215547634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759305.

The product of its (nonzero) digits is 32659200, while the sum is 57.

The spelling of 20936215547634 in words is "twenty trillion, nine hundred thirty-six billion, two hundred fifteen million, five hundred forty-seven thousand, six hundred thirty-four".