451966142405 has 4 divisors (see below), whose sum is σ = 542359370892. Its totient is φ = 361572913920.

The previous prime is 451966142371. The next prime is 451966142413. The reversal of 451966142405 is 504241669154.

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 355189776484 + 96776365921 = 595978^2 + 311089^2 .

It is not a de Polignac number, because 451966142405 - 2¹⁴ = 451966126021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451966142405.

It is a congruent number.

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, 45196614236 + ... + 45196614245.

It is an arithmetic number, because the mean of its divisors is an integer number (135589842723).

Almost surely, 2^451966142405 is an apocalyptic number.

It is an amenable number.

451966142405 is a deficient number, since it is larger than the sum of its proper divisors (90393228487).

451966142405 is an equidigital number, since it uses as much as digits as its factorization.

451966142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90393228486.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 451966142405 in words is "four hundred fifty-one billion, nine hundred sixty-six million, one hundred forty-two thousand, four hundred five".