80018174778434 has 8 divisors (see below), whose sum is σ = 122954756366988. Its totient is φ = 39033255989440.

The previous prime is 80018174778413. The next prime is 80018174778491. The reversal of 80018174778434 is 43487747181008.

It can be written as a sum of positive squares in 2 ways, for example, as 79967358347809 + 50816430625 = 8942447^2 + 225425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80018174778434² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487915699787 + ... + 487915699950.

Almost surely, 2^{80018174778434} is an apocalyptic number.

80018174778434 is a deficient number, since it is larger than the sum of its proper divisors (42936581588554).

80018174778434 is a wasteful number, since it uses less digits than its factorization.

80018174778434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975831399780.

The product of its (nonzero) digits is 33718272, while the sum is 62.

The spelling of 80018174778434 in words is "eighty trillion, eighteen billion, one hundred seventy-four million, seven hundred seventy-eight thousand, four hundred thirty-four".