85179929533 has 2 divisors, whose sum is σ = 85179929534. Its totient is φ = 85179929532.

The previous prime is 85179929489. The next prime is 85179929563. The reversal of 85179929533 is 33592997158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85122730564 + 57198969 = 291758^2 + 7563^2 .

It is a cyclic number.

It is not a de Polignac number, because 85179929533 - 2¹⁷ = 85179798461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85179929563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42589964766 + 42589964767.

It is an arithmetic number, because the mean of its divisors is an integer number (42589964767).

Almost surely, 2^85179929533 is an apocalyptic number.

It is an amenable number.

85179929533 is a deficient number, since it is larger than the sum of its proper divisors (1).

85179929533 is an equidigital number, since it uses as much as digits as its factorization.

85179929533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18370800, while the sum is 61.

The spelling of 85179929533 in words is "eighty-five billion, one hundred seventy-nine million, nine hundred twenty-nine thousand, five hundred thirty-three".