40221736647 has 16 divisors (see below), whose sum is σ = 55018749408. Its totient is φ = 26121553920.

The previous prime is 40221736603. The next prime is 40221736661. The reversal of 40221736647 is 74663712204.

It is not a de Polignac number, because 40221736647 - 2¹⁶ = 40221671111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40221736599 and 40221736608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221736697) 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 15 ways as a sum of consecutive naturals, for example, 160168 + ... + 325725.

It is an arithmetic number, because the mean of its divisors is an integer number (3438671838).

Almost surely, 2^40221736647 is an apocalyptic number.

40221736647 is a deficient number, since it is larger than the sum of its proper divisors (14797012761).

40221736647 is a wasteful number, since it uses less digits than its factorization.

40221736647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486610.

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 40221736647 in words is "forty billion, two hundred twenty-one million, seven hundred thirty-six thousand, six hundred forty-seven".