981529678057 has 2 divisors, whose sum is σ = 981529678058. Its totient is φ = 981529678056.

The previous prime is 981529678021. The next prime is 981529678097. The reversal of 981529678057 is 750876925189.

981529678057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945452854336 + 36076823721 = 972344^2 + 189939^2 .

It is a cyclic number.

It is not a de Polignac number, because 981529678057 - 2¹⁵ = 981529645289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981529677983 and 981529678001.

It is not a weakly prime, because it can be changed into another prime (981529678007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490764839028 + 490764839029.

It is an arithmetic number, because the mean of its divisors is an integer number (490764839029).

Almost surely, 2^981529678057 is an apocalyptic number.

It is an amenable number.

981529678057 is a deficient number, since it is larger than the sum of its proper divisors (1).

981529678057 is an equidigital number, since it uses as much as digits as its factorization.

981529678057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76204800, while the sum is 67.

The spelling of 981529678057 in words is "nine hundred eighty-one billion, five hundred twenty-nine million, six hundred seventy-eight thousand, fifty-seven".