630412261463640 has 128 divisors (see below), whose sum is σ = 1903129785987840. Its totient is φ = 167053095415296.

The previous prime is 630412261463599. The next prime is 630412261463681. The reversal of 630412261463640 is 46364162214036.

It is an interprime number because it is at equal distance from previous prime (630412261463599) and next prime (630412261463681).

It is a self number, because there is not a number n which added to its sum of digits gives 630412261463640.

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, 125916874 + ... + 130827686.

It is an arithmetic number, because the mean of its divisors is an integer number (14868201453030).

Almost surely, 2^{630412261463640} is an apocalyptic number.

630412261463640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630412261463640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951564892993920).

630412261463640 is an abundant number, since it is smaller than the sum of its proper divisors (1272717524524200).

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

630412261463640 is a wasteful number, since it uses less digits than its factorization.

630412261463640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4917553 (or 4917549 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 630412261463640 in words is "six hundred thirty trillion, four hundred twelve billion, two hundred sixty-one million, four hundred sixty-three thousand, six hundred forty".