18435429957273 has 32 divisors (see below), whose sum is σ = 28478078048256. Its totient is φ = 10389795412608.

The previous prime is 18435429957247. The next prime is 18435429957337. The reversal of 18435429957273 is 37275992453481.

It is not a de Polignac number, because 18435429957273 - 2¹² = 18435429953177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18435429957198 and 18435429957207.

It is not an unprimeable number, because it can be changed into a prime (18435429957073) 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, 39076236 + ... + 39545202.

It is an arithmetic number, because the mean of its divisors is an integer number (889939939008).

Almost surely, 2^{18435429957273} is an apocalyptic number.

It is an amenable number.

18435429957273 is a deficient number, since it is larger than the sum of its proper divisors (10042648090983).

18435429957273 is a wasteful number, since it uses less digits than its factorization.

18435429957273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494693.

The product of its digits is 457228800, while the sum is 69.

The spelling of 18435429957273 in words is "eighteen trillion, four hundred thirty-five billion, four hundred twenty-nine million, nine hundred fifty-seven thousand, two hundred seventy-three".