451551505440 has 96 divisors (see below), whose sum is σ = 1625585431680. Its totient is φ = 103211771904.

The previous prime is 451551505429. The next prime is 451551505451. The reversal of 451551505440 is 44505155154.

It is an interprime number because it is at equal distance from previous prime (451551505429) and next prime (451551505451).

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67191805 + ... + 67198524.

It is an arithmetic number, because the mean of its divisors is an integer number (16933181580).

Almost surely, 2^451551505440 is an apocalyptic number.

451551505440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451551505440 is an abundant number, since it is smaller than the sum of its proper divisors (1174033926240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451551505440 is a wasteful number, since it uses less digits than its factorization.

451551505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134390354 (or 134390346 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 451551505440 in words is "four hundred fifty-one billion, five hundred fifty-one million, five hundred five thousand, four hundred forty".