20329854405417 has 40 divisors (see below), whose sum is σ = 31691715627264. Its totient is φ = 12963137501952.

The previous prime is 20329854405397. The next prime is 20329854405433. The reversal of 20329854405417 is 71450445892302.

It is a happy number.

20329854405417 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 9 + 8 + 54 + 40 + 541 + 7 = 666.

It is not a de Polignac number, because 20329854405417 - 2¹⁵ = 20329854372649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20329854405317) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29529168 + ... + 30209790.

Almost surely, 2^{20329854405417} is an apocalyptic number.

20329854405417 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20329854405417 is a deficient number, since it is larger than the sum of its proper divisors (11361861221847).

20329854405417 is a wasteful number, since it uses less digits than its factorization.

20329854405417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696691 (or 696682 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 20329854405417 in words is "twenty trillion, three hundred twenty-nine billion, eight hundred fifty-four million, four hundred five thousand, four hundred seventeen".