20394958717027 has 16 divisors (see below), whose sum is σ = 20629945488672. Its totient is φ = 20160627379200.

The previous prime is 20394958717009. The next prime is 20394958717033. The reversal of 20394958717027 is 72071785949302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20394958717027 is a prime.

It is a super-2 number, since 2×20394958717027² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20394958717027.

It is not an unprimeable number, because it can be changed into a prime (20394958714027) 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, 924217848 + ... + 924239914.

It is an arithmetic number, because the mean of its divisors is an integer number (1289371593042).

Almost surely, 2^{20394958717027} is an apocalyptic number.

20394958717027 is a deficient number, since it is larger than the sum of its proper divisors (234986771645).

20394958717027 is a wasteful number, since it uses less digits than its factorization.

20394958717027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36438.

The product of its (nonzero) digits is 53343360, while the sum is 64.

It can be divided in two parts, 203949 and 58717027, that added together give a square (58920976 = 7676²).

The spelling of 20394958717027 in words is "twenty trillion, three hundred ninety-four billion, nine hundred fifty-eight million, seven hundred seventeen thousand, twenty-seven".