438655556803 has 2 divisors, whose sum is σ = 438655556804. Its totient is φ = 438655556802.

The previous prime is 438655556797. The next prime is 438655556869. The reversal of 438655556803 is 308655556834.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438655556803 is a prime.

It is not a weakly prime, because it can be changed into another prime (438655553803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219327778401 + 219327778402.

It is an arithmetic number, because the mean of its divisors is an integer number (219327778402).

Almost surely, 2^438655556803 is an apocalyptic number.

438655556803 is a deficient number, since it is larger than the sum of its proper divisors (1).

438655556803 is an equidigital number, since it uses as much as digits as its factorization.

438655556803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840000, while the sum is 58.

The spelling of 438655556803 in words is "four hundred thirty-eight billion, six hundred fifty-five million, five hundred fifty-six thousand, eight hundred three".