612585172040 has 32 divisors (see below), whose sum is σ = 1378356913080. Its totient is φ = 245026908672.

The previous prime is 612585172039. The next prime is 612585172097. The reversal of 612585172040 is 40271585216.

It can be written as a sum of positive squares in 4 ways, for example, as 405853088356 + 206732083684 = 637066^2 + 454678^2 .

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 7 ways as a sum of consecutive naturals, for example, 1288394 + ... + 1698566.

Almost surely, 2^612585172040 is an apocalyptic number.

It is an amenable number.

612585172040 is an abundant number, since it is smaller than the sum of its proper divisors (765771741040).

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

612585172040 is a wasteful number, since it uses less digits than its factorization.

612585172040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447521 (or 447517 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 612585172040 in words is "six hundred twelve billion, five hundred eighty-five million, one hundred seventy-two thousand, forty".