61641163741201 has 16 divisors (see below), whose sum is σ = 68386833576000. Its totient is φ = 55085875840000.

The previous prime is 61641163741181. The next prime is 61641163741231. The reversal of 61641163741201 is 10214736114616.

It is a cyclic number.

It is not a de Polignac number, because 61641163741201 - 2³⁵ = 61606804002833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61641163741231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19039701 + ... + 22040701.

It is an arithmetic number, because the mean of its divisors is an integer number (4274177098500).

Almost surely, 2^{61641163741201} is an apocalyptic number.

It is an amenable number.

61641163741201 is a deficient number, since it is larger than the sum of its proper divisors (6745669834799).

61641163741201 is a wasteful number, since it uses less digits than its factorization.

61641163741201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032720.

The product of its (nonzero) digits is 145152, while the sum is 43.

Adding to 61641163741201 its reverse (10214736114616), we get a palindrome (71855899855817).

The spelling of 61641163741201 in words is "sixty-one trillion, six hundred forty-one billion, one hundred sixty-three million, seven hundred forty-one thousand, two hundred one".