405142021443551 has 32 divisors (see below), whose sum is σ = 479031643865088. Its totient is φ = 335306020785120.

The previous prime is 405142021443463. The next prime is 405142021443569. The reversal of 405142021443551 is 155344120241504.

It is not a de Polignac number, because 405142021443551 - 2²² = 405142017249247 is a prime.

It is a super-3 number, since 3×405142021443551³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405142021443499 and 405142021443508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405142021443751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1133837546 + ... + 1134194808.

It is an arithmetic number, because the mean of its divisors is an integer number (14969738870784).

Almost surely, 2^{405142021443551} is an apocalyptic number.

405142021443551 is a deficient number, since it is larger than the sum of its proper divisors (73889622421537).

405142021443551 is a wasteful number, since it uses less digits than its factorization.

405142021443551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369051.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 405142021443551 in words is "four hundred five trillion, one hundred forty-two billion, twenty-one million, four hundred forty-three thousand, five hundred fifty-one".