408671725541 has 4 divisors (see below), whose sum is σ = 410367459084. Its totient is φ = 406975992000.

The previous prime is 408671725523. The next prime is 408671725577. The reversal of 408671725541 is 145527176804.

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 356343333025 + 52328392516 = 596945^2 + 228754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408671725541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408671725541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408671715541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847866410 + ... + 847866891.

It is an arithmetic number, because the mean of its divisors is an integer number (102591864771).

Almost surely, 2^408671725541 is an apocalyptic number.

It is an amenable number.

408671725541 is a deficient number, since it is larger than the sum of its proper divisors (1695733543).

408671725541 is a wasteful number, since it uses less digits than its factorization.

408671725541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695733542.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 408671725541 in words is "four hundred eight billion, six hundred seventy-one million, seven hundred twenty-five thousand, five hundred forty-one".