20179145952019 has 16 divisors (see below), whose sum is σ = 20323467648000. Its totient is φ = 20035357050240.

The previous prime is 20179145952011. The next prime is 20179145952041. The reversal of 20179145952019 is 91025954197102.

It is a cyclic number.

It is not a de Polignac number, because 20179145952019 - 2³ = 20179145952011 is a prime.

It is a super-2 number, since 2×20179145952019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20179145952011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300604779 + ... + 300671899.

It is an arithmetic number, because the mean of its divisors is an integer number (1270216728000).

Almost surely, 2^{20179145952019} is an apocalyptic number.

20179145952019 is a deficient number, since it is larger than the sum of its proper divisors (144321695981).

20179145952019 is a wasteful number, since it uses less digits than its factorization.

20179145952019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71058.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The spelling of 20179145952019 in words is "twenty trillion, one hundred seventy-nine billion, one hundred forty-five million, nine hundred fifty-two thousand, nineteen".