405968538798 has 48 divisors (see below), whose sum is σ = 901259429616. Its totient is φ = 131991914880.

The previous prime is 405968538797. The next prime is 405968538809. The reversal of 405968538798 is 897835869504.

405968538798 is a `hidden beast` number, since 405 + 9 + 6 + 8 + 53 + 87 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405968538797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3265140 + ... + 3387192.

It is an arithmetic number, because the mean of its divisors is an integer number (18776238117).

Almost surely, 2^405968538798 is an apocalyptic number.

405968538798 is an abundant number, since it is smaller than the sum of its proper divisors (495290890818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405968538798 is a wasteful number, since it uses less digits than its factorization.

405968538798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126609 (or 126606 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 72.

The spelling of 405968538798 in words is "four hundred five billion, nine hundred sixty-eight million, five hundred thirty-eight thousand, seven hundred ninety-eight".