40145021205 has 8 divisors (see below), whose sum is σ = 64232033952. Its totient is φ = 21410677968.

The previous prime is 40145021197. The next prime is 40145021221. The reversal of 40145021205 is 50212054104.

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

It is not a de Polignac number, because 40145021205 - 2³ = 40145021197 is a prime.

It is a super-2 number, since 2×40145021205² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338167359 + ... + 1338167388.

It is an arithmetic number, because the mean of its divisors is an integer number (8029004244).

Almost surely, 2^40145021205 is an apocalyptic number.

It is an amenable number.

40145021205 is a deficient number, since it is larger than the sum of its proper divisors (24087012747).

40145021205 is a wasteful number, since it uses less digits than its factorization.

40145021205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676334755.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 40145021205 its reverse (50212054104), we get a palindrome (90357075309).

The spelling of 40145021205 in words is "forty billion, one hundred forty-five million, twenty-one thousand, two hundred five".