40721358763 has 4 divisors (see below), whose sum is σ = 40721777320. Its totient is φ = 40720940208.

The previous prime is 40721358737. The next prime is 40721358767. The reversal of 40721358763 is 36785312704.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40721358763 - 2²⁵ = 40687804331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40721358767) 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, 21448 + ... + 286186.

It is an arithmetic number, because the mean of its divisors is an integer number (10180444330).

Almost surely, 2^40721358763 is an apocalyptic number.

40721358763 is a deficient number, since it is larger than the sum of its proper divisors (418557).

40721358763 is a wasteful number, since it uses less digits than its factorization.

40721358763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418556.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 40721358763 in words is "forty billion, seven hundred twenty-one million, three hundred fifty-eight thousand, seven hundred sixty-three".