61511152241 has 32 divisors (see below), whose sum is σ = 81225918720. Its totient is φ = 45097113600.

The previous prime is 61511152231. The next prime is 61511152243. The reversal of 61511152241 is 14225111516.

61511152241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61511152241 - 2²² = 61506957937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61511152243) 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, 6043805 + ... + 6053973.

It is an arithmetic number, because the mean of its divisors is an integer number (2538309960).

Almost surely, 2^61511152241 is an apocalyptic number.

It is an amenable number.

61511152241 is a deficient number, since it is larger than the sum of its proper divisors (19714766479).

61511152241 is a wasteful number, since it uses less digits than its factorization.

61511152241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825.

The product of its digits is 2400, while the sum is 29.

Adding to 61511152241 its reverse (14225111516), we get a palindrome (75736263757).

The spelling of 61511152241 in words is "sixty-one billion, five hundred eleven million, one hundred fifty-two thousand, two hundred forty-one".