20364613402643 has 8 divisors (see below), whose sum is σ = 21087515516400. Its totient is φ = 19643089559968.

The previous prime is 20364613402543. The next prime is 20364613402669. The reversal of 20364613402643 is 34620431646302.

It is a happy number.

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 20364613402643 - 2³⁴ = 20347433533459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20364613402594 and 20364613402603.

It is not an unprimeable number, because it can be changed into a prime (20364613402043) 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, 344537696 + ... + 344596797.

It is an arithmetic number, because the mean of its divisors is an integer number (2635939439550).

Almost surely, 2^{20364613402643} is an apocalyptic number.

20364613402643 is a deficient number, since it is larger than the sum of its proper divisors (722902113757).

20364613402643 is a wasteful number, since it uses less digits than its factorization.

20364613402643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689135541.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 20364613402643 in words is "twenty trillion, three hundred sixty-four billion, six hundred thirteen million, four hundred two thousand, six hundred forty-three".