402497361630 has 480 divisors, whose sum is σ = 1435596535296. Its totient is φ = 79925336064.

The previous prime is 402497361589. The next prime is 402497361667. The reversal of 402497361630 is 36163794204.

402497361630 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 9 + 7 + 3 + 6 + 1 + 630 = 666.

It is a super-2 number, since 2×402497361630² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 8748547 + ... + 8794433.

Almost surely, 2^402497361630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402497361630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717798267648).

402497361630 is an abundant number, since it is smaller than the sum of its proper divisors (1033099173666).

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

402497361630 is a wasteful number, since it uses less digits than its factorization.

402497361630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45950 (or 45934 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 402497361630 in words is "four hundred two billion, four hundred ninety-seven million, three hundred sixty-one thousand, six hundred thirty".