264305631630 has 128 divisors (see below), whose sum is σ = 661560431616. Its totient is φ = 67537433600.

The previous prime is 264305631617. The next prime is 264305631659. The reversal of 264305631630 is 36136503462.

It is a super-2 number, since 2×264305631630² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12068290 + ... + 12090170.

It is an arithmetic number, because the mean of its divisors is an integer number (5168440872).

Almost surely, 2^264305631630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264305631630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330780215808).

264305631630 is an abundant number, since it is smaller than the sum of its proper divisors (397254799986).

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

264305631630 is a wasteful number, since it uses less digits than its factorization.

264305631630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22122.

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 264305631630 in words is "two hundred sixty-four billion, three hundred five million, six hundred thirty-one thousand, six hundred thirty".