61430350143 has 16 divisors (see below), whose sum is σ = 83918461536. Its totient is φ = 39948226560.

The previous prime is 61430350139. The next prime is 61430350199. The reversal of 61430350143 is 34105303416.

61430350143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61430350143 - 2² = 61430350139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61430350143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61430350543) 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, 791071 + ... + 865247.

It is an arithmetic number, because the mean of its divisors is an integer number (5244903846).

Almost surely, 2^61430350143 is an apocalyptic number.

61430350143 is a deficient number, since it is larger than the sum of its proper divisors (22488111393).

61430350143 is a wasteful number, since it uses less digits than its factorization.

61430350143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80954.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 61430350143 its reverse (34105303416), we get a palindrome (95535653559).

The spelling of 61430350143 in words is "sixty-one billion, four hundred thirty million, three hundred fifty thousand, one hundred forty-three".