41621370471561 has 16 divisors (see below), whose sum is σ = 56684292795648. Its totient is φ = 27153188899200.

The previous prime is 41621370471529. The next prime is 41621370471661. The reversal of 41621370471561 is 16517407312614.

It is not a de Polignac number, because 41621370471561 - 2⁵ = 41621370471529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41621370471561.

It is not an unprimeable number, because it can be changed into a prime (41621370471661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20876830 + ... + 22783431.

It is an arithmetic number, because the mean of its divisors is an integer number (3542768299728).

Almost surely, 2^{41621370471561} is an apocalyptic number.

It is an amenable number.

41621370471561 is a deficient number, since it is larger than the sum of its proper divisors (15062922324087).

41621370471561 is a wasteful number, since it uses less digits than its factorization.

41621370471561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43667072.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 41621370471561 in words is "forty-one trillion, six hundred twenty-one billion, three hundred seventy million, four hundred seventy-one thousand, five hundred sixty-one".