50561515115506 has 4 divisors (see below), whose sum is σ = 75842272673262. Its totient is φ = 25280757557752.

The previous prime is 50561515115383. The next prime is 50561515115539. The reversal of 50561515115506 is 60551151516505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36002292036481 + 14559223079025 = 6000191^2 + 3815655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12640378778875 + ... + 12640378778878.

Almost surely, 2^{50561515115506} is an apocalyptic number.

50561515115506 is a deficient number, since it is larger than the sum of its proper divisors (25280757557756).

50561515115506 is a wasteful number, since it uses less digits than its factorization.

50561515115506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25280757557755.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 50561515115506 in words is "fifty trillion, five hundred sixty-one billion, five hundred fifteen million, one hundred fifteen thousand, five hundred six".