985415915641 has 2 divisors, whose sum is σ = 985415915642. Its totient is φ = 985415915640.

The previous prime is 985415915623. The next prime is 985415915651. The reversal of 985415915641 is 146519514589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876133440400 + 109282475241 = 936020^2 + 330579^2 .

It is a cyclic number.

It is not a de Polignac number, because 985415915641 - 2⁵ = 985415915609 is a prime.

It is not a weakly prime, because it can be changed into another prime (985415915651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492707957820 + 492707957821.

It is an arithmetic number, because the mean of its divisors is an integer number (492707957821).

Almost surely, 2^985415915641 is an apocalyptic number.

It is an amenable number.

985415915641 is a deficient number, since it is larger than the sum of its proper divisors (1).

985415915641 is an equidigital number, since it uses as much as digits as its factorization.

985415915641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776000, while the sum is 58.

The spelling of 985415915641 in words is "nine hundred eighty-five billion, four hundred fifteen million, nine hundred fifteen thousand, six hundred forty-one".