655326440973 has 12 divisors (see below), whose sum is σ = 946590078720. Its totient is φ = 436880859336.

The previous prime is 655326440959. The next prime is 655326441041. The reversal of 655326440973 is 379044623556.

655326440973 is a `hidden beast` number, since 6 + 5 + 532 + 64 + 40 + 9 + 7 + 3 = 666.

It is not a de Polignac number, because 655326440973 - 2¹⁷ = 655326309901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655326440933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1526218 + ... + 1907876.

It is an arithmetic number, because the mean of its divisors is an integer number (78882506560).

Almost surely, 2^655326440973 is an apocalyptic number.

It is an amenable number.

655326440973 is a deficient number, since it is larger than the sum of its proper divisors (291263637747).

655326440973 is a wasteful number, since it uses less digits than its factorization.

655326440973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572448 (or 572445 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 54.

The spelling of 655326440973 in words is "six hundred fifty-five billion, three hundred twenty-six million, four hundred forty thousand, nine hundred seventy-three".