61452115072 has 64 divisors (see below), whose sum is σ = 123047985600. Its totient is φ = 30569923584.

The previous prime is 61452115069. The next prime is 61452115073. The reversal of 61452115072 is 27051125416.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (61452115073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24031618 + ... + 24034174.

It is an arithmetic number, because the mean of its divisors is an integer number (1922624775).

Almost surely, 2^61452115072 is an apocalyptic number.

It is an amenable number.

61452115072 is an abundant number, since it is smaller than the sum of its proper divisors (61595870528).

61452115072 is a wasteful number, since it uses less digits than its factorization.

61452115072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 61452115072 in words is "sixty-one billion, four hundred fifty-two million, one hundred fifteen thousand, seventy-two".