40321012305 has 32 divisors (see below), whose sum is σ = 74035830528. Its totient is φ = 18355968000.

The previous prime is 40321012273. The next prime is 40321012349. The reversal of 40321012305 is 50321012304.

It is not a de Polignac number, because 40321012305 - 2⁵ = 40321012273 is a prime.

It is a super-2 number, since 2×40321012305² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 771396 + ... + 822005.

It is an arithmetic number, because the mean of its divisors is an integer number (2313619704).

Almost surely, 2^40321012305 is an apocalyptic number.

It is an amenable number.

40321012305 is a deficient number, since it is larger than the sum of its proper divisors (33714818223).

40321012305 is a wasteful number, since it uses less digits than its factorization.

40321012305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593657.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 40321012305 its reverse (50321012304), we get a palindrome (90642024609).

Subtracting 40321012305 from its reverse (50321012304), we obtain a palindrome (9999999999).

The spelling of 40321012305 in words is "forty billion, three hundred twenty-one million, twelve thousand, three hundred five".