405100051540 has 24 divisors (see below), whose sum is σ = 856830330720. Its totient is φ = 160874263968.

The previous prime is 405100051519. The next prime is 405100051541. The reversal of 405100051540 is 45150001504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405100051541) 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 in 7 ways as a sum of consecutive naturals, for example, 72856942 + ... + 72862501.

It is an arithmetic number, because the mean of its divisors is an integer number (35701263780).

Almost surely, 2^405100051540 is an apocalyptic number.

It is an amenable number.

405100051540 is an abundant number, since it is smaller than the sum of its proper divisors (451730279180).

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

405100051540 is a wasteful number, since it uses less digits than its factorization.

405100051540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145719591 (or 145719589 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 405100051540 in words is "four hundred five billion, one hundred million, fifty-one thousand, five hundred forty".