451542336961 has 3 divisors (see below), whose sum is σ = 451543008931. Its totient is φ = 451541664992.

The previous prime is 451542336941. The next prime is 451542337003. The reversal of 451542336961 is 169633245154.

The square root of 451542336961 is 671969.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 430967303361 + 20575033600 = 656481^2 + 143440^2 .

It is not a de Polignac number, because 451542336961 - 2²³ = 451533948353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451542336901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 335985 + ... + 1007953.

Almost surely, 2^451542336961 is an apocalyptic number.

451542336961 is the 671969-th square number.

451542336961 is the 335985-th centered octagonal number.

It is an amenable number.

451542336961 is a deficient number, since it is larger than the sum of its proper divisors (671970).

451542336961 is an frugal number, since it uses more digits than its factorization.

451542336961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343938 (or 671969 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 49.

Multiplying 451542336961 by its sum of digits (49), we get a square (22125574511089 = 4703783²).

The spelling of 451542336961 in words is "four hundred fifty-one billion, five hundred forty-two million, three hundred thirty-six thousand, nine hundred sixty-one".