61511152308 has 48 divisors (see below), whose sum is σ = 144399689280. Its totient is φ = 20379216384.

The previous prime is 61511152291. The next prime is 61511152331. The reversal of 61511152308 is 80325111516.

It is a happy number.

61511152308 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, 1610691 + ... + 1648437.

It is an arithmetic number, because the mean of its divisors is an integer number (3008326860).

Almost surely, 2^61511152308 is an apocalyptic number.

It is an amenable number.

61511152308 is an abundant number, since it is smaller than the sum of its proper divisors (82888536972).

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

61511152308 is a wasteful number, since it uses less digits than its factorization.

61511152308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38576 (or 38574 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 61511152308 in words is "sixty-one billion, five hundred eleven million, one hundred fifty-two thousand, three hundred eight".