61520325841 has 16 divisors (see below), whose sum is σ = 67786354944. Its totient is φ = 55477828224.

The previous prime is 61520325829. The next prime is 61520325859. The reversal of 61520325841 is 14852302516.

It is not a de Polignac number, because 61520325841 - 2⁹ = 61520325329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61520325841.

It is not an unprimeable number, because it can be changed into a prime (61520325821) 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, 242181 + ... + 426253.

It is an arithmetic number, because the mean of its divisors is an integer number (4236647184).

Almost surely, 2^61520325841 is an apocalyptic number.

It is an amenable number.

61520325841 is a deficient number, since it is larger than the sum of its proper divisors (6266029103).

61520325841 is a wasteful number, since it uses less digits than its factorization.

61520325841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184680.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 61520325841 in words is "sixty-one billion, five hundred twenty million, three hundred twenty-five thousand, eight hundred forty-one".