40286912656 has 75 divisors (see below), whose sum is σ = 82989313251. Its totient is φ = 18945984672.

The previous prime is 40286912621. The next prime is 40286912669. The reversal of 40286912656 is 65621968204.

The square root of 40286912656 is 200716.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 289833835 + ... + 289833973.

Almost surely, 2^40286912656 is an apocalyptic number.

40286912656 is the 200716-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40286912656

40286912656 is an abundant number, since it is smaller than the sum of its proper divisors (42702400595).

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

40286912656 is an frugal number, since it uses more digits than its factorization.

40286912656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

Multiplying 40286912656 by its sum of digits (49), we get a square (1974058720144 = 1405012²).

The spelling of 40286912656 in words is "forty billion, two hundred eighty-six million, nine hundred twelve thousand, six hundred fifty-six".