20394366397 has 8 divisors (see below), whose sum is σ = 21055514112. Its totient is φ = 19733422800.

The previous prime is 20394366389. The next prime is 20394366401. The reversal of 20394366397 is 79366349302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20394366397 - 2³ = 20394366389 is a prime.

It is a super-4 number, since 4×20394366397⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20394366337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166872 + ... + 261982.

It is an arithmetic number, because the mean of its divisors is an integer number (2631939264).

Almost surely, 2^20394366397 is an apocalyptic number.

It is an amenable number.

20394366397 is a deficient number, since it is larger than the sum of its proper divisors (661147715).

20394366397 is an equidigital number, since it uses as much as digits as its factorization.

20394366397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102059.

The product of its (nonzero) digits is 4408992, while the sum is 52.

The spelling of 20394366397 in words is "twenty billion, three hundred ninety-four million, three hundred sixty-six thousand, three hundred ninety-seven".