40420623063 has 4 divisors (see below), whose sum is σ = 53894164088. Its totient is φ = 26947082040.

The previous prime is 40420623049. The next prime is 40420623083. The reversal of 40420623063 is 36032602404.

It is a happy number.

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

It is not a de Polignac number, because 40420623063 - 2¹² = 40420618967 is a prime.

It is a super-2 number, since 2×40420623063² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40420623063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420623083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6736770508 + ... + 6736770513.

It is an arithmetic number, because the mean of its divisors is an integer number (13473541022).

Almost surely, 2^40420623063 is an apocalyptic number.

40420623063 is a deficient number, since it is larger than the sum of its proper divisors (13473541025).

40420623063 is a wasteful number, since it uses less digits than its factorization.

40420623063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13473541024.

The product of its (nonzero) digits is 20736, while the sum is 30.

The spelling of 40420623063 in words is "forty billion, four hundred twenty million, six hundred twenty-three thousand, sixty-three".