61511152242 has 16 divisors (see below), whose sum is σ = 123043802112. Its totient is φ = 20500134480.

The previous prime is 61511152231. The next prime is 61511152243. The reversal of 61511152242 is 24225111516.

61511152242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 858418 + ... + 927309.

It is an arithmetic number, because the mean of its divisors is an integer number (7690237632).

Almost surely, 2^61511152242 is an apocalyptic number.

61511152242 is an abundant number, since it is smaller than the sum of its proper divisors (61532649870).

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

61511152242 is a wasteful number, since it uses less digits than its factorization.

61511152242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791473.

The product of its digits is 4800, while the sum is 30.

Adding to 61511152242 its reverse (24225111516), we get a palindrome (85736263758).

The spelling of 61511152242 in words is "sixty-one billion, five hundred eleven million, one hundred fifty-two thousand, two hundred forty-two".