61142344450 has 24 divisors (see below), whose sum is σ = 124063376400. Its totient is φ = 22233579600.

The previous prime is 61142344391. The next prime is 61142344477. The reversal of 61142344450 is 5444324116.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55583400 + ... + 55584499.

It is an arithmetic number, because the mean of its divisors is an integer number (5169307350).

Almost surely, 2^61142344450 is an apocalyptic number.

61142344450 is an abundant number, since it is smaller than the sum of its proper divisors (62921031950).

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

61142344450 is a wasteful number, since it uses less digits than its factorization.

61142344450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111167922 (or 111167917 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 61142344450 its reverse (5444324116), we get a palindrome (66586668566).

The spelling of 61142344450 in words is "sixty-one billion, one hundred forty-two million, three hundred forty-four thousand, four hundred fifty".