89778855029 has 2 divisors, whose sum is σ = 89778855030. Its totient is φ = 89778855028.

The previous prime is 89778855013. The next prime is 89778855059. The reversal of 89778855029 is 92055887798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80505550225 + 9273304804 = 283735^2 + 96298^2 .

It is a cyclic number.

It is not a de Polignac number, because 89778855029 - 2⁴ = 89778855013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89778855029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89778855059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44889427514 + 44889427515.

It is an arithmetic number, because the mean of its divisors is an integer number (44889427515).

Almost surely, 2^89778855029 is an apocalyptic number.

It is an amenable number.

89778855029 is a deficient number, since it is larger than the sum of its proper divisors (1).

89778855029 is an equidigital number, since it uses as much as digits as its factorization.

89778855029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101606400, while the sum is 68.

The spelling of 89778855029 in words is "eighty-nine billion, seven hundred seventy-eight million, eight hundred fifty-five thousand, twenty-nine".