61472013568 has 144 divisors (see below), whose sum is σ = 142683496704. Its totient is φ = 25887375360.

The previous prime is 61472013553. The next prime is 61472013569. The reversal of 61472013568 is 86531027416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61472013569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50510496 + ... + 50511712.

It is an arithmetic number, because the mean of its divisors is an integer number (990857616).

Almost surely, 2^61472013568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61472013568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71341748352).

61472013568 is an abundant number, since it is smaller than the sum of its proper divisors (81211483136).

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

61472013568 is a wasteful number, since it uses less digits than its factorization.

61472013568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 61472013568 in words is "sixty-one billion, four hundred seventy-two million, thirteen thousand, five hundred sixty-eight".