451172355432613 has 4 divisors (see below), whose sum is σ = 451381134868108. Its totient is φ = 450963575997120.

The previous prime is 451172355432593. The next prime is 451172355432647. The reversal of 451172355432613 is 316234553271154.

It is a happy number.

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 252307587261249 + 198864768171364 = 15884193^2 + 14101942^2 .

It is a cyclic number.

It is not a de Polignac number, because 451172355432613 - 2⁵ = 451172355432581 is a prime.

It is a super-2 number, since 2×451172355432613² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451172355432013) 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, 104389714506 + ... + 104389718827.

It is an arithmetic number, because the mean of its divisors is an integer number (112845283717027).

Almost surely, 2^{451172355432613} is an apocalyptic number.

It is an amenable number.

451172355432613 is a deficient number, since it is larger than the sum of its proper divisors (208779435495).

451172355432613 is a wasteful number, since it uses less digits than its factorization.

451172355432613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208779435494.

The product of its digits is 9072000, while the sum is 52.

The spelling of 451172355432613 in words is "four hundred fifty-one trillion, one hundred seventy-two billion, three hundred fifty-five million, four hundred thirty-two thousand, six hundred thirteen".