450123136551505 has 16 divisors (see below), whose sum is σ = 545406066301824. Its totient is φ = 356593155684480.

The previous prime is 450123136551503. The next prime is 450123136551547. The reversal of 450123136551505 is 505155631321054.

It is not a de Polignac number, because 450123136551505 - 2¹ = 450123136551503 is a prime.

It is a super-2 number, since 2×450123136551505² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450123136551503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8566317 + ... + 31203013.

It is an arithmetic number, because the mean of its divisors is an integer number (34087879143864).

Almost surely, 2^{450123136551505} is an apocalyptic number.

It is an amenable number.

450123136551505 is a deficient number, since it is larger than the sum of its proper divisors (95282929750319).

450123136551505 is a wasteful number, since it uses less digits than its factorization.

450123136551505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22675416.

The product of its (nonzero) digits is 1350000, while the sum is 46.

Adding to 450123136551505 its reverse (505155631321054), we get a palindrome (955278767872559).

The spelling of 450123136551505 in words is "four hundred fifty trillion, one hundred twenty-three billion, one hundred thirty-six million, five hundred fifty-one thousand, five hundred five".