505055661515 has 8 divisors (see below), whose sum is σ = 632417524128. Its totient is φ = 386477375680.

The previous prime is 505055661493. The next prime is 505055661559. The reversal of 505055661515 is 515166550505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505055661515 - 2¹⁴ = 505055645131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195894066 + ... + 2195894295.

It is an arithmetic number, because the mean of its divisors is an integer number (79052190516).

Almost surely, 2^505055661515 is an apocalyptic number.

505055661515 is a deficient number, since it is larger than the sum of its proper divisors (127361862613).

505055661515 is a wasteful number, since it uses less digits than its factorization.

505055661515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391788389.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 505055661515 in words is "five hundred five billion, fifty-five million, six hundred sixty-one thousand, five hundred fifteen".