61143655023 has 96 divisors (see below), whose sum is σ = 99307301184. Its totient is φ = 36241920000.

The previous prime is 61143654997. The next prime is 61143655051. The reversal of 61143655023 is 32055634116.

61143655023 is a `hidden beast` number, since 6 + 1 + 143 + 6 + 5 + 502 + 3 = 666.

It is not a de Polignac number, because 61143655023 - 2⁵ = 61143654991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61143655063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 117358003 + ... + 117358523.

It is an arithmetic number, because the mean of its divisors is an integer number (1034451054).

Almost surely, 2^61143655023 is an apocalyptic number.

61143655023 is a deficient number, since it is larger than the sum of its proper divisors (38163646161).

61143655023 is a wasteful number, since it uses less digits than its factorization.

61143655023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

It can be divided in two parts, 611 and 43655023, that added together give a palindrome (43655634).

The spelling of 61143655023 in words is "sixty-one billion, one hundred forty-three million, six hundred fifty-five thousand, twenty-three".