61143625665254 has 96 divisors (see below), whose sum is σ = 108234162610560. Its totient is φ = 25793060325120.

The previous prime is 61143625665247. The next prime is 61143625665277. The reversal of 61143625665254 is 45256652634116.

61143625665254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61143625665254.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 178413437 + ... + 178755815.

It is an arithmetic number, because the mean of its divisors is an integer number (1127439193860).

Almost surely, 2^{61143625665254} is an apocalyptic number.

61143625665254 is a deficient number, since it is larger than the sum of its proper divisors (47090536945306).

61143625665254 is a wasteful number, since it uses less digits than its factorization.

61143625665254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343026 (or 343015 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 56.

The spelling of 61143625665254 in words is "sixty-one trillion, one hundred forty-three billion, six hundred twenty-five million, six hundred sixty-five thousand, two hundred fifty-four".