40776321581956 has 27 divisors (see below), whose sum is σ = 75312393920631. Its totient is φ = 19314984755304.

The previous prime is 40776321581953. The next prime is 40776321581959. The reversal of 40776321581956 is 65918512367704.

The square root of 40776321581956 is 6385634.

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

It is an interprime number because it is at equal distance from previous prime (40776321581953) and next prime (40776321581959).

It is not an unprimeable number, because it can be changed into a prime (40776321581953) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 242570071 + ... + 242738113.

It is a 1-persistent number, because it is pandigital, but 2⋅40776321581956 = 81552643163912 is not.

Almost surely, 2^{40776321581956} is an apocalyptic number.

40776321581956 is the 6385634-th square number.

It is an amenable number.

40776321581956 is a deficient number, since it is larger than the sum of its proper divisors (34536072338675).

40776321581956 is an frugal number, since it uses more digits than its factorization.

40776321581956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336128 (or 168064 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 64.

The spelling of 40776321581956 in words is "forty trillion, seven hundred seventy-six billion, three hundred twenty-one million, five hundred eighty-one thousand, nine hundred fifty-six".