40400051313 has 8 divisors (see below), whose sum is σ = 53893636128. Its totient is φ = 26919917024.

The previous prime is 40400051299. The next prime is 40400051317. The reversal of 40400051313 is 31315000404.

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

It is a cyclic number.

It is not a de Polignac number, because 40400051313 - 2⁵ = 40400051281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40400051313.

It is not an unprimeable number, because it can be changed into a prime (40400051317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3355620 + ... + 3367637.

It is an arithmetic number, because the mean of its divisors is an integer number (6736704516).

Almost surely, 2^40400051313 is an apocalyptic number.

It is an amenable number.

40400051313 is a deficient number, since it is larger than the sum of its proper divisors (13493584815).

40400051313 is a wasteful number, since it uses less digits than its factorization.

40400051313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725263.

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

Adding to 40400051313 its reverse (31315000404), we get a palindrome (71715051717).

The spelling of 40400051313 in words is "forty billion, four hundred million, fifty-one thousand, three hundred thirteen".