405145551542 has 4 divisors (see below), whose sum is σ = 607718327316. Its totient is φ = 202572775770.

The previous prime is 405145551541. The next prime is 405145551581. The reversal of 405145551542 is 245155541504.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×405145551542³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 405145551542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405145551541) 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, 101286387884 + ... + 101286387887.

It is an arithmetic number, because the mean of its divisors is an integer number (151929581829).

Almost surely, 2^405145551542 is an apocalyptic number.

405145551542 is a deficient number, since it is larger than the sum of its proper divisors (202572775774).

405145551542 is a wasteful number, since it uses less digits than its factorization.

405145551542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202572775773.

The product of its (nonzero) digits is 400000, while the sum is 41.

The spelling of 405145551542 in words is "four hundred five billion, one hundred forty-five million, five hundred fifty-one thousand, five hundred forty-two".