61241403513520 has 40 divisors (see below), whose sum is σ = 142409640802320. Its totient is φ = 24492539447040.

The previous prime is 61241403513497. The next prime is 61241403513527. The reversal of 61241403513520 is 2531530414216.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 61241403513520.

It is not an unprimeable number, because it can be changed into a prime (61241403513527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62352775 + ... + 63327334.

It is an arithmetic number, because the mean of its divisors is an integer number (3560241020058).

Almost surely, 2^{61241403513520} is an apocalyptic number.

It is an amenable number.

61241403513520 is an abundant number, since it is smaller than the sum of its proper divisors (81168237288800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61241403513520 is a wasteful number, since it uses less digits than its factorization.

61241403513520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125686213 (or 125686207 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 61241403513520 its reverse (2531530414216), we get a palindrome (63772933927736).

The spelling of 61241403513520 in words is "sixty-one trillion, two hundred forty-one billion, four hundred three million, five hundred thirteen thousand, five hundred twenty".