613631138472 has 96 divisors (see below), whose sum is σ = 1813825522080. Its totient is φ = 185864273280.

The previous prime is 613631138401. The next prime is 613631138513. The reversal of 613631138472 is 274831136316.

613631138472 is a `hidden beast` number, since 6 + 1 + 3 + 63 + 113 + 8 + 472 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1577643 + ... + 1927749.

It is an arithmetic number, because the mean of its divisors is an integer number (18894015855).

Almost surely, 2^613631138472 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 613631138472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906912761040).

613631138472 is an abundant number, since it is smaller than the sum of its proper divisors (1200194383608).

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

613631138472 is a wasteful number, since it uses less digits than its factorization.

613631138472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352343 (or 352336 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 613631138472 in words is "six hundred thirteen billion, six hundred thirty-one million, one hundred thirty-eight thousand, four hundred seventy-two".