20041893397 has 8 divisors (see below), whose sum is σ = 20152857816. Its totient is φ = 19931185152.

The previous prime is 20041893373. The next prime is 20041893427. The reversal of 20041893397 is 79339814002.

It can be written as a sum of positive squares in 4 ways, for example, as 506520036 + 19535373361 = 22506^2 + 139769^2 .

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 20041893397 - 2⁷ = 20041893269 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 (20041293397) 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, 93933 + ... + 221149.

It is an arithmetic number, because the mean of its divisors is an integer number (2519107227).

Almost surely, 2^20041893397 is an apocalyptic number.

It is an amenable number.

20041893397 is a deficient number, since it is larger than the sum of its proper divisors (110964419).

20041893397 is a wasteful number, since it uses less digits than its factorization.

20041893397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128087.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 20041893397 in words is "twenty billion, forty-one million, eight hundred ninety-three thousand, three hundred ninety-seven".