40351901705 has 4 divisors (see below), whose sum is σ = 48422282052. Its totient is φ = 32281521360.

The previous prime is 40351901701. The next prime is 40351901771. The reversal of 40351901705 is 50710915304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5870011456 + 34481890249 = 76616^2 + 185693^2 .

It is not a de Polignac number, because 40351901705 - 2² = 40351901701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40351901701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4035190166 + ... + 4035190175.

It is an arithmetic number, because the mean of its divisors is an integer number (12105570513).

Almost surely, 2^40351901705 is an apocalyptic number.

It is an amenable number.

40351901705 is a deficient number, since it is larger than the sum of its proper divisors (8070380347).

40351901705 is an equidigital number, since it uses as much as digits as its factorization.

40351901705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070380346.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 40351901705 in words is "forty billion, three hundred fifty-one million, nine hundred one thousand, seven hundred five".