519540645505 has 16 divisors (see below), whose sum is σ = 713571629184. Its totient is φ = 355727070720.

The previous prime is 519540645427. The next prime is 519540645509. The reversal of 519540645505 is 505546045915.

It is not a de Polignac number, because 519540645505 - 2¹⁵ = 519540612737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (519540645509) 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 15 ways as a sum of consecutive naturals, for example, 11004691 + ... + 11051800.

It is an arithmetic number, because the mean of its divisors is an integer number (44598226824).

Almost surely, 2^519540645505 is an apocalyptic number.

It is an amenable number.

519540645505 is a deficient number, since it is larger than the sum of its proper divisors (194030983679).

519540645505 is a wasteful number, since it uses less digits than its factorization.

519540645505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22057176.

The product of its (nonzero) digits is 2700000, while the sum is 49.

The spelling of 519540645505 in words is "five hundred nineteen billion, five hundred forty million, six hundred forty-five thousand, five hundred five".