40636235473 has 4 divisors (see below), whose sum is σ = 40759003888. Its totient is φ = 40513467060.

The previous prime is 40636235461. The next prime is 40636235513. The reversal of 40636235473 is 37453263604.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40636235473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40636230473) 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, 61383711 + ... + 61384372.

It is an arithmetic number, because the mean of its divisors is an integer number (10189750972).

Almost surely, 2^40636235473 is an apocalyptic number.

It is an amenable number.

40636235473 is a deficient number, since it is larger than the sum of its proper divisors (122768415).

40636235473 is a wasteful number, since it uses less digits than its factorization.

40636235473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122768414.

The product of its (nonzero) digits is 1088640, while the sum is 43.

The spelling of 40636235473 in words is "forty billion, six hundred thirty-six million, two hundred thirty-five thousand, four hundred seventy-three".