20182638365803 has 8 divisors (see below), whose sum is σ = 20189254963040. Its totient is φ = 20176022401920.

The previous prime is 20182638365759. The next prime is 20182638365807. The reversal of 20182638365803 is 30856383628102.

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 20182638365803 - 2²¹ = 20182636268651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20182638365807) 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, 68398858 + ... + 68693296.

It is an arithmetic number, because the mean of its divisors is an integer number (2523656870380).

Almost surely, 2^{20182638365803} is an apocalyptic number.

20182638365803 is a deficient number, since it is larger than the sum of its proper divisors (6616597237).

20182638365803 is a wasteful number, since it uses less digits than its factorization.

20182638365803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316677.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 20182638365803 in words is "twenty trillion, one hundred eighty-two billion, six hundred thirty-eight million, three hundred sixty-five thousand, eight hundred three".