405554554540 has 24 divisors (see below), whose sum is σ = 856587488400. Its totient is φ = 161284122048.

The previous prime is 405554554513. The next prime is 405554554543. The reversal of 405554554540 is 45455455504.

It is a super-2 number, since 2×405554554540² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405554554543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58602690 + ... + 58609609.

It is an arithmetic number, because the mean of its divisors is an integer number (35691145350).

Almost surely, 2^405554554540 is an apocalyptic number.

It is an amenable number.

405554554540 is an abundant number, since it is smaller than the sum of its proper divisors (451032933860).

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

405554554540 is a wasteful number, since it uses less digits than its factorization.

405554554540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117212481 (or 117212479 counting only the distinct ones).

The product of its (nonzero) digits is 4000000, while the sum is 46.

The spelling of 405554554540 in words is "four hundred five billion, five hundred fifty-four million, five hundred fifty-four thousand, five hundred forty".