50155556210661 has 64 divisors (see below), whose sum is σ = 74617992852480. Its totient is φ = 29712375936000.

The previous prime is 50155556210659. The next prime is 50155556210687. The reversal of 50155556210661 is 16601265555105.

50155556210661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50155556210661 - 2¹ = 50155556210659 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50155556210661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50155556210611) 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 63 ways as a sum of consecutive naturals, for example, 206177181 + ... + 206420301.

It is an arithmetic number, because the mean of its divisors is an integer number (1165906138320).

Almost surely, 2^{50155556210661} is an apocalyptic number.

It is an amenable number.

50155556210661 is a deficient number, since it is larger than the sum of its proper divisors (24462436641819).

50155556210661 is a wasteful number, since it uses less digits than its factorization.

50155556210661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244018.

The product of its (nonzero) digits is 1350000, while the sum is 48.

The spelling of 50155556210661 in words is "fifty trillion, one hundred fifty-five billion, five hundred fifty-six million, two hundred ten thousand, six hundred sixty-one".