40232779663 has 4 divisors (see below), whose sum is σ = 40233311848. Its totient is φ = 40232247480.

The previous prime is 40232779637. The next prime is 40232779673. The reversal of 40232779663 is 36697723204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40232779663 - 2¹⁷ = 40232648591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40232779673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129228 + ... + 311713.

It is an arithmetic number, because the mean of its divisors is an integer number (10058327962).

Almost surely, 2^40232779663 is an apocalyptic number.

40232779663 is a deficient number, since it is larger than the sum of its proper divisors (532185).

40232779663 is an equidigital number, since it uses as much as digits as its factorization.

40232779663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532184.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 40232779663 in words is "forty billion, two hundred thirty-two million, seven hundred seventy-nine thousand, six hundred sixty-three".