50201616251661 has 16 divisors (see below), whose sum is σ = 77751761628288. Its totient is φ = 28216365105600.

The previous prime is 50201616251569. The next prime is 50201616251663. The reversal of 50201616251661 is 16615261610205.

50201616251661 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 50201616251661 - 2²³ = 50201607863053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50201616251663) 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 15 ways as a sum of consecutive naturals, for example, 19594696710 + ... + 19594699271.

It is an arithmetic number, because the mean of its divisors is an integer number (4859485101768).

Almost surely, 2^{50201616251661} is an apocalyptic number.

It is an amenable number.

50201616251661 is a deficient number, since it is larger than the sum of its proper divisors (27550145376627).

50201616251661 is a wasteful number, since it uses less digits than its factorization.

50201616251661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39189396052.

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 50201616251661 its reverse (16615261610205), we get a palindrome (66816877861866).

The spelling of 50201616251661 in words is "fifty trillion, two hundred one billion, six hundred sixteen million, two hundred fifty-one thousand, six hundred sixty-one".