451662254340 has 144 divisors (see below), whose sum is σ = 1425564463680. Its totient is φ = 105961670400.

The previous prime is 451662254339. The next prime is 451662254341. The reversal of 451662254340 is 43452266154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (451662254339) and next prime (451662254341).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 451662254292 and 451662254301.

It is not an unprimeable number, because it can be changed into a prime (451662254341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278206 + ... + 990314.

It is an arithmetic number, because the mean of its divisors is an integer number (9899753220).

Almost surely, 2^451662254340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451662254340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712782231840).

451662254340 is an abundant number, since it is smaller than the sum of its proper divisors (973902209340).

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

451662254340 is a wasteful number, since it uses less digits than its factorization.

451662254340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712194 (or 712161 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 451662254340 in words is "four hundred fifty-one billion, six hundred sixty-two million, two hundred fifty-four thousand, three hundred forty".