61641201405237 has 32 divisors (see below), whose sum is σ = 82625256520704. Its totient is φ = 40876327065600.

The previous prime is 61641201405221. The next prime is 61641201405257. The reversal of 61641201405237 is 73250410214616.

It is not a de Polignac number, because 61641201405237 - 2⁴ = 61641201405221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61641201405257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781346608 + ... + 781425494.

It is an arithmetic number, because the mean of its divisors is an integer number (2582039266272).

Almost surely, 2^{61641201405237} is an apocalyptic number.

It is an amenable number.

61641201405237 is a deficient number, since it is larger than the sum of its proper divisors (20984055115467).

61641201405237 is a wasteful number, since it uses less digits than its factorization.

61641201405237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81049.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 61641201405237 in words is "sixty-one trillion, six hundred forty-one billion, two hundred one million, four hundred five thousand, two hundred thirty-seven".