409722503816 has 8 divisors (see below), whose sum is σ = 768229694670. Its totient is φ = 204861251904.

The previous prime is 409722503779. The next prime is 409722503819. The reversal of 409722503816 is 618305227904.

It can be written as a sum of positive squares in only one way, i.e., 211189878916 + 198532624900 = 459554^2 + 445570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (409722503819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607656481 + ... + 25607656496.

It is a 2-persistent number, because it is pandigital, and so is 2⋅409722503816 = 819445007632, but 3⋅409722503816 = 1229167511448 is not.

Almost surely, 2^409722503816 is an apocalyptic number.

It is an amenable number.

409722503816 is a deficient number, since it is larger than the sum of its proper divisors (358507190854).

409722503816 is a wasteful number, since it uses less digits than its factorization.

409722503816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51215312983 (or 51215312979 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 409722503816 in words is "four hundred nine billion, seven hundred twenty-two million, five hundred three thousand, eight hundred sixteen".