166798079535 has 32 divisors (see below), whose sum is σ = 278253527040. Its totient is φ = 85215086208.

The previous prime is 166798079533. The next prime is 166798079543. The reversal of 166798079535 is 535970897661.

It is not a de Polignac number, because 166798079535 - 2¹ = 166798079533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166798079533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1454377 + ... + 1564866.

It is an arithmetic number, because the mean of its divisors is an integer number (8695422720).

Almost surely, 2^166798079535 is an apocalyptic number.

166798079535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166798079535 is a deficient number, since it is larger than the sum of its proper divisors (111455447505).

166798079535 is a wasteful number, since it uses less digits than its factorization.

166798079535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019407.

The product of its (nonzero) digits is 85730400, while the sum is 66.

It can be divided in two parts, 1667980 and 79535, that added together give a triangular number (1747515 = T₁₈₆₉).

The spelling of 166798079535 in words is "one hundred sixty-six billion, seven hundred ninety-eight million, seventy-nine thousand, five hundred thirty-five".