61231572430400 has 84 divisors (see below), whose sum is σ = 150707949544128. Its totient is φ = 24486124669440.

The previous prime is 61231572430339. The next prime is 61231572430423. The reversal of 61231572430400 is 403427513216.

61231572430400 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 11 ways as a sum of consecutive naturals, for example, 947597 + ... + 11106803.

Almost surely, 2^{61231572430400} 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 61231572430400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75353974772064).

61231572430400 is an abundant number, since it is smaller than the sum of its proper divisors (89476377113728).

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

61231572430400 is a wasteful number, since it uses less digits than its factorization.

61231572430400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162996 (or 10162981 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

Adding to 61231572430400 its reverse (403427513216), we get a palindrome (61634999943616).

The spelling of 61231572430400 in words is "sixty-one trillion, two hundred thirty-one billion, five hundred seventy-two million, four hundred thirty thousand, four hundred".