61145521313064 has 16 divisors (see below), whose sum is σ = 152863803282720. Its totient is φ = 20381840437680.

The previous prime is 61145521313027. The next prime is 61145521313077. The reversal of 61145521313064 is 46031312554116.

61145521313064 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 3 ways as a sum of consecutive naturals, for example, 1273865027332 + ... + 1273865027379.

It is an arithmetic number, because the mean of its divisors is an integer number (9553987705170).

Almost surely, 2^{61145521313064} is an apocalyptic number.

It is an amenable number.

61145521313064 is an abundant number, since it is smaller than the sum of its proper divisors (91718281969656).

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

61145521313064 is a wasteful number, since it uses less digits than its factorization.

61145521313064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547730054720 (or 2547730054716 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 61145521313064 in words is "sixty-one trillion, one hundred forty-five billion, five hundred twenty-one million, three hundred thirteen thousand, sixty-four".