405244020442504 has 8 divisors (see below), whose sum is σ = 759832538329710. Its totient is φ = 202622010221248.

The previous prime is 405244020442501. The next prime is 405244020442507.

405244020442504 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (405244020442501) and next prime (405244020442507).

It can be written as a sum of positive squares in only one way, i.e., 253048619880004 + 152195400562500 = 15907502^2 + 12336750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×405244020442504² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405244020442501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25327751277649 + ... + 25327751277664.

Almost surely, 2^{405244020442504} is an apocalyptic number.

It is an amenable number.

405244020442504 is a deficient number, since it is larger than the sum of its proper divisors (354588517887206).

405244020442504 is a wasteful number, since it uses less digits than its factorization.

405244020442504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50655502555319 (or 50655502555315 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 40.

The spelling of 405244020442504 in words is "four hundred five trillion, two hundred forty-four billion, twenty million, four hundred forty-two thousand, five hundred four".