40963421217 has 4 divisors (see below), whose sum is σ = 54617894960. Its totient is φ = 27308947476.

The previous prime is 40963421209. The next prime is 40963421231. The reversal of 40963421217 is 71212436904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40963421217 - 2³ = 40963421209 is a prime.

It is a super-2 number, since 2×40963421217² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40963421237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6827236867 + ... + 6827236872.

It is an arithmetic number, because the mean of its divisors is an integer number (13654473740).

Almost surely, 2^40963421217 is an apocalyptic number.

It is an amenable number.

40963421217 is a deficient number, since it is larger than the sum of its proper divisors (13654473743).

40963421217 is a wasteful number, since it uses less digits than its factorization.

40963421217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13654473742.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 40963421217 in words is "forty billion, nine hundred sixty-three million, four hundred twenty-one thousand, two hundred seventeen".