50561615656505 has 8 divisors (see below), whose sum is σ = 61274670855624. Its totient is φ = 40048804480000.

The previous prime is 50561615656457. The next prime is 50561615656547. The reversal of 50561615656505 is 50565651616505.

It can be written as a sum of positive squares in 4 ways, for example, as 7023999980089 + 43537615676416 = 2650283^2 + 6598304^2 .

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

It is not a de Polignac number, because 50561615656505 - 2¹² = 50561615652409 is a prime.

It is a super-2 number, since 2×50561615656505² (a number of 28 digits) contains 22 as substring.

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, 50061005096 + ... + 50061006105.

It is an arithmetic number, because the mean of its divisors is an integer number (7659333856953).

Almost surely, 2^{50561615656505} is an apocalyptic number.

It is an amenable number.

50561615656505 is a deficient number, since it is larger than the sum of its proper divisors (10713055199119).

50561615656505 is a wasteful number, since it uses less digits than its factorization.

50561615656505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100122011307.

The product of its (nonzero) digits is 20250000, while the sum is 56.

The spelling of 50561615656505 in words is "fifty trillion, five hundred sixty-one billion, six hundred fifteen million, six hundred fifty-six thousand, five hundred five".