451946915447 has 32 divisors (see below), whose sum is σ = 486832840704. Its totient is φ = 418599244800.

The previous prime is 451946915417. The next prime is 451946915471. The reversal of 451946915447 is 744519649154.

It is a cyclic number.

It is not a de Polignac number, because 451946915447 - 2²⁸ = 451678479991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451946915417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25984688 + ... + 26002074.

It is an arithmetic number, because the mean of its divisors is an integer number (15213526272).

Almost surely, 2^451946915447 is an apocalyptic number.

451946915447 is a deficient number, since it is larger than the sum of its proper divisors (34885925257).

451946915447 is a wasteful number, since it uses less digits than its factorization.

451946915447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17759.

The product of its digits is 21772800, while the sum is 59.

The spelling of 451946915447 in words is "four hundred fifty-one billion, nine hundred forty-six million, nine hundred fifteen thousand, four hundred forty-seven".