61574247516 has 24 divisors (see below), whose sum is σ = 144184544784. Its totient is φ = 20451706240.

The previous prime is 61574247491. The next prime is 61574247517.

61574247516 is nontrivially palindromic in base 10.

61574247516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61574247517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9126855 + ... + 9133598.

It is an arithmetic number, because the mean of its divisors is an integer number (6007689366).

Almost surely, 2^61574247516 is an apocalyptic number.

It is an amenable number.

61574247516 is an abundant number, since it is smaller than the sum of its proper divisors (82610297268).

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

61574247516 is a wasteful number, since it uses less digits than its factorization.

61574247516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18260741 (or 18260739 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 61574247516 in words is "sixty-one billion, five hundred seventy-four million, two hundred forty-seven thousand, five hundred sixteen".