61511152340 has 48 divisors (see below), whose sum is σ = 143575286400. Its totient is φ = 21945655680.

The previous prime is 61511152337. The next prime is 61511152361. The reversal of 61511152340 is 4325111516.

61511152340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2626040 + ... + 2649359.

It is an arithmetic number, because the mean of its divisors is an integer number (2991151800).

Almost surely, 2^61511152340 is an apocalyptic number.

It is an amenable number.

61511152340 is an abundant number, since it is smaller than the sum of its proper divisors (82064134060).

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

61511152340 is a wasteful number, since it uses less digits than its factorization.

61511152340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275472 (or 5275470 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 61511152340 its reverse (4325111516), we get a palindrome (65836263856).

The spelling of 61511152340 in words is "sixty-one billion, five hundred eleven million, one hundred fifty-two thousand, three hundred forty".