40364023821 has 8 divisors (see below), whose sum is σ = 58711307424. Its totient is φ = 24463044720.

The previous prime is 40364023783. The next prime is 40364023859. The reversal of 40364023821 is 12832046304.

It is an interprime number because it is at equal distance from previous prime (40364023783) and next prime (40364023859).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40364023821 - 2¹¹ = 40364021773 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1223152237 = 40364023821 / (4 + 0 + 3 + 6 + 4 + 0 + 2 + 3 + 8 + 2 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40364023421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611576086 + ... + 611576151.

It is an arithmetic number, because the mean of its divisors is an integer number (7338913428).

Almost surely, 2^40364023821 is an apocalyptic number.

It is an amenable number.

40364023821 is a deficient number, since it is larger than the sum of its proper divisors (18347283603).

40364023821 is a wasteful number, since it uses less digits than its factorization.

40364023821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223152251.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 40364023821 in words is "forty billion, three hundred sixty-four million, twenty-three thousand, eight hundred twenty-one".