20246743165 has 16 divisors (see below), whose sum is σ = 26642172096. Its totient is φ = 14648601600.

The previous prime is 20246743129. The next prime is 20246743169. The reversal of 20246743165 is 56134764202.

It is not a de Polignac number, because 20246743165 - 2¹⁷ = 20246612093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20246743169) 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, 943071 + ... + 964300.

It is an arithmetic number, because the mean of its divisors is an integer number (1665135756).

Almost surely, 2^20246743165 is an apocalyptic number.

It is an amenable number.

20246743165 is a deficient number, since it is larger than the sum of its proper divisors (6395428931).

20246743165 is a wasteful number, since it uses less digits than its factorization.

20246743165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907580.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20246743165 in words is "twenty billion, two hundred forty-six million, seven hundred forty-three thousand, one hundred sixty-five".