40505001212 has 12 divisors (see below), whose sum is σ = 76336348536. Its totient is φ = 18694615920.

The previous prime is 40505001149. The next prime is 40505001223. The reversal of 40505001212 is 21210050504.

40505001212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389471114 + ... + 389471217.

It is an arithmetic number, because the mean of its divisors is an integer number (6361362378).

Almost surely, 2^40505001212 is an apocalyptic number.

It is an amenable number.

40505001212 is a deficient number, since it is larger than the sum of its proper divisors (35831347324).

40505001212 is a wasteful number, since it uses less digits than its factorization.

40505001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778942348 (or 778942346 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 40505001212 its reverse (21210050504), we get a palindrome (61715051716).

The spelling of 40505001212 in words is "forty billion, five hundred five million, one thousand, two hundred twelve".