54620050421661 has 4 divisors (see below), whose sum is σ = 72826733895552. Its totient is φ = 36413366947772.

The previous prime is 54620050421641. The next prime is 54620050421731. The reversal of 54620050421661 is 16612405002645.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54620050421661 - 2¹³ = 54620050413469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54620050421641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9103341736941 + ... + 9103341736946.

It is an arithmetic number, because the mean of its divisors is an integer number (18206683473888).

Almost surely, 2^{54620050421661} is an apocalyptic number.

It is an amenable number.

54620050421661 is a deficient number, since it is larger than the sum of its proper divisors (18206683473891).

54620050421661 is a wasteful number, since it uses less digits than its factorization.

54620050421661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18206683473890.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 54620050421661 in words is "fifty-four trillion, six hundred twenty billion, fifty million, four hundred twenty-one thousand, six hundred sixty-one".