40501320345 has 48 divisors (see below), whose sum is σ = 71781196032. Its totient is φ = 21120261120.

The previous prime is 40501320329. The next prime is 40501320361. The reversal of 40501320345 is 54302310504.

40501320345 is a `hidden beast` number, since 405 + 0 + 13 + 203 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (40501320329) and next prime (40501320361).

It is not a de Polignac number, because 40501320345 - 2⁴ = 40501320329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 306400 + ... + 418190.

It is an arithmetic number, because the mean of its divisors is an integer number (1495441584).

Almost surely, 2^40501320345 is an apocalyptic number.

40501320345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40501320345 is a deficient number, since it is larger than the sum of its proper divisors (31279875687).

40501320345 is a wasteful number, since it uses less digits than its factorization.

40501320345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111982 (or 111979 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 40501320345 its reverse (54302310504), we get a palindrome (94803630849).

The spelling of 40501320345 in words is "forty billion, five hundred one million, three hundred twenty thousand, three hundred forty-five".