451353554673631 has 4 divisors (see below), whose sum is σ = 451355524786512. Its totient is φ = 451351584560752.

The previous prime is 451353554673529. The next prime is 451353554673641. The reversal of 451353554673631 is 136376455353154.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 451353554673631 - 2⁴¹ = 449154531418079 is a prime.

It is a super-2 number, since 2×451353554673631² (a number of 30 digits) contains 22 as substring.

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 451353554673631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451353554673641) 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, 984712750 + ... + 985171003.

It is an arithmetic number, because the mean of its divisors is an integer number (112838881196628).

Almost surely, 2^{451353554673631} is an apocalyptic number.

451353554673631 is a deficient number, since it is larger than the sum of its proper divisors (1970112881).

451353554673631 is a wasteful number, since it uses less digits than its factorization.

451353554673631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970112880.

The product of its digits is 204120000, while the sum is 61.

The spelling of 451353554673631 in words is "four hundred fifty-one trillion, three hundred fifty-three billion, five hundred fifty-four million, six hundred seventy-three thousand, six hundred thirty-one".