61614031143 has 24 divisors (see below), whose sum is σ = 95711115888. Its totient is φ = 35154045696.

The previous prime is 61614031139. The next prime is 61614031163. The reversal of 61614031143 is 34113041616.

61614031143 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 61614031143 - 2² = 61614031139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61614031143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61614031103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224946 + ... + 416927.

It is an arithmetic number, because the mean of its divisors is an integer number (3987963162).

Almost surely, 2^61614031143 is an apocalyptic number.

61614031143 is a deficient number, since it is larger than the sum of its proper divisors (34097084745).

61614031143 is a wasteful number, since it uses less digits than its factorization.

61614031143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642543 (or 642536 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 61614031143 its reverse (34113041616), we get a palindrome (95727072759).

It can be divided in two parts, 6161 and 4031143, that added together give a palindrome (4037304).

The spelling of 61614031143 in words is "sixty-one billion, six hundred fourteen million, thirty-one thousand, one hundred forty-three".