61248816123 has 12 divisors (see below), whose sum is σ = 89764105704. Its totient is φ = 37120494400.

The previous prime is 61248816121. The next prime is 61248816137. The reversal of 61248816123 is 32161884216.

It is a happy number.

It is not a de Polignac number, because 61248816123 - 2¹ = 61248816121 is a prime.

It is a super-2 number, since 2×61248816123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61248816121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84364398 + ... + 84365123.

It is an arithmetic number, because the mean of its divisors is an integer number (7480342142).

Almost surely, 2^61248816123 is an apocalyptic number.

61248816123 is a deficient number, since it is larger than the sum of its proper divisors (28515289581).

61248816123 is a wasteful number, since it uses less digits than its factorization.

61248816123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168729546 (or 168729535 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The spelling of 61248816123 in words is "sixty-one billion, two hundred forty-eight million, eight hundred sixteen thousand, one hundred twenty-three".