80166539439402 has 32 divisors (see below), whose sum is σ = 172678263004800. Its totient is φ = 24664931753280.

The previous prime is 80166539439373. The next prime is 80166539439433. The reversal of 80166539439402 is 20493493566108.

It is a super-3 number, since 3×80166539439402³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34186374 + ... + 36456017.

It is an arithmetic number, because the mean of its divisors is an integer number (5396195718900).

Almost surely, 2^{80166539439402} is an apocalyptic number.

80166539439402 is an abundant number, since it is smaller than the sum of its proper divisors (92511723565398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80166539439402 is a wasteful number, since it uses less digits than its factorization.

80166539439402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70656958.

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 80166539439402 in words is "eighty trillion, one hundred sixty-six billion, five hundred thirty-nine million, four hundred thirty-nine thousand, four hundred two".