451734204204021 has 4 divisors (see below), whose sum is σ = 602312272272032. Its totient is φ = 301156136136012.

The previous prime is 451734204203987. The next prime is 451734204204043. The reversal of 451734204204021 is 120402402437154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 451734204204021 - 2¹⁰ = 451734204202997 is a prime.

It is a super-2 number, since 2×451734204204021² (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 (451734204204221) 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, 75289034034001 + ... + 75289034034006.

It is an arithmetic number, because the mean of its divisors is an integer number (150578068068008).

Almost surely, 2^{451734204204021} is an apocalyptic number.

It is an amenable number.

451734204204021 is a deficient number, since it is larger than the sum of its proper divisors (150578068068011).

451734204204021 is a wasteful number, since it uses less digits than its factorization.

451734204204021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150578068068010.

The product of its (nonzero) digits is 215040, while the sum is 39.

The spelling of 451734204204021 in words is "four hundred fifty-one trillion, seven hundred thirty-four billion, two hundred four million, two hundred four thousand, twenty-one".