61443513032 has 64 divisors (see below), whose sum is σ = 134947347840. Its totient is φ = 25915724800.

The previous prime is 61443513013. The next prime is 61443513037. The reversal of 61443513032 is 23031534416.

It is a super-3 number, since 3×61443513032³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61443513032.

It is not an unprimeable number, because it can be changed into a prime (61443513037) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 183023 + ... + 395454.

It is an arithmetic number, because the mean of its divisors is an integer number (2108552310).

Almost surely, 2^61443513032 is an apocalyptic number.

It is an amenable number.

61443513032 is an abundant number, since it is smaller than the sum of its proper divisors (73503834808).

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

61443513032 is a wasteful number, since it uses less digits than its factorization.

61443513032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578582 (or 578578 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

It can be divided in two parts, 61443 and 513032, that added together give a palindrome (574475).

The spelling of 61443513032 in words is "sixty-one billion, four hundred forty-three million, five hundred thirteen thousand, thirty-two".