61485315012 has 72 divisors (see below), whose sum is σ = 179523987552. Its totient is φ = 17535916800.

The previous prime is 61485314983. The next prime is 61485315037. The reversal of 61485315012 is 21051358416.

61485315012 is a `hidden beast` number, since 6 + 148 + 5 + 3 + 1 + 501 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4559914 + ... + 4573377.

It is an arithmetic number, because the mean of its divisors is an integer number (2493388716).

Almost surely, 2^61485315012 is an apocalyptic number.

It is an amenable number.

61485315012 is an abundant number, since it is smaller than the sum of its proper divisors (118038672540).

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

61485315012 is a wasteful number, since it uses less digits than its factorization.

61485315012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9133329 (or 9133324 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 61485315012 in words is "sixty-one billion, four hundred eighty-five million, three hundred fifteen thousand, twelve".