451256205185880 has 128 divisors (see below), whose sum is σ = 1386989701574400. Its totient is φ = 117389025234432.

The previous prime is 451256205185879. The next prime is 451256205186067. The reversal of 451256205185880 is 88581502652154.

It is a super-2 number, since 2×451256205185880² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50751190 + ... + 58976229.

It is an arithmetic number, because the mean of its divisors is an integer number (10835857043550).

Almost surely, 2^{451256205185880} is an apocalyptic number.

451256205185880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451256205185880 is an abundant number, since it is smaller than the sum of its proper divisors (935733496388520).

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

451256205185880 is a wasteful number, since it uses less digits than its factorization.

451256205185880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109728273 (or 109728269 counting only the distinct ones).

The product of its (nonzero) digits is 30720000, while the sum is 60.

The spelling of 451256205185880 in words is "four hundred fifty-one trillion, two hundred fifty-six billion, two hundred five million, one hundred eighty-five thousand, eight hundred eighty".