61243245070864 has 40 divisors (see below), whose sum is σ = 121211074494720. Its totient is φ = 29967622589568.

The previous prime is 61243245070831. The next prime is 61243245070873. The reversal of 61243245070864 is 46807054234216.

61243245070864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145252087 + ... + 145673110.

It is an arithmetic number, because the mean of its divisors is an integer number (3030276862368).

Almost surely, 2^{61243245070864} is an apocalyptic number.

It is an amenable number.

61243245070864 is a deficient number, since it is larger than the sum of its proper divisors (59967829423856).

61243245070864 is a wasteful number, since it uses less digits than its factorization.

61243245070864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290925487 (or 290925481 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 61243245070864 in words is "sixty-one trillion, two hundred forty-three billion, two hundred forty-five million, seventy thousand, eight hundred sixty-four".