61123789035 has 144 divisors (see below), whose sum is σ = 113422405824. Its totient is φ = 30441996288.

The previous prime is 61123788997. The next prime is 61123789057. The reversal of 61123789035 is 53098732116.

61123789035 is a `hidden beast` number, since 611 + 23 + 7 + 8 + 9 + 0 + 3 + 5 = 666.

It is not a de Polignac number, because 61123789035 - 2¹⁴ = 61123772651 is a prime.

It is a super-2 number, since 2×61123789035² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 237835627 + ... + 237835883.

It is an arithmetic number, because the mean of its divisors is an integer number (787655596).

Almost surely, 2^61123789035 is an apocalyptic number.

61123789035 is a deficient number, since it is larger than the sum of its proper divisors (52298616789).

61123789035 is a wasteful number, since it uses less digits than its factorization.

61123789035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 61123789035 in words is "sixty-one billion, one hundred twenty-three million, seven hundred eighty-nine thousand, thirty-five".