61395748512 has 48 divisors (see below), whose sum is σ = 184187247552. Its totient is φ = 17541642240.

The previous prime is 61395748507. The next prime is 61395748529. The reversal of 61395748512 is 21584759316.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 45680689 + ... + 45682032.

It is an arithmetic number, because the mean of its divisors is an integer number (3837234324).

Almost surely, 2^61395748512 is an apocalyptic number.

It is an amenable number.

61395748512 is an abundant number, since it is smaller than the sum of its proper divisors (122791499040).

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

61395748512 is a wasteful number, since it uses less digits than its factorization.

61395748512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91362741 (or 91362733 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The spelling of 61395748512 in words is "sixty-one billion, three hundred ninety-five million, seven hundred forty-eight thousand, five hundred twelve".