419957906173 has 4 divisors (see below), whose sum is σ = 452262360508. Its totient is φ = 387653451840.

The previous prime is 419957906107. The next prime is 419957906213. The reversal of 419957906173 is 371609759914.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88778373849 + 331179532324 = 297957^2 + 575482^2 .

It is a cyclic number.

It is not a de Polignac number, because 419957906173 - 2²⁵ = 419924351741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (419957906273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16152227148 + ... + 16152227173.

It is an arithmetic number, because the mean of its divisors is an integer number (113065590127).

Almost surely, 2^419957906173 is an apocalyptic number.

It is an amenable number.

419957906173 is a deficient number, since it is larger than the sum of its proper divisors (32304454335).

419957906173 is a wasteful number, since it uses less digits than its factorization.

419957906173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32304454334.

The product of its (nonzero) digits is 12859560, while the sum is 61.

The spelling of 419957906173 in words is "four hundred nineteen billion, nine hundred fifty-seven million, nine hundred six thousand, one hundred seventy-three".