61249824999 has 96 divisors (see below), whose sum is σ = 104255424000. Its totient is φ = 35593810560.

The previous prime is 61249824989. The next prime is 61249825051. The reversal of 61249824999 is 99942894216.

61249824999 is a `hidden beast` number, since 6 + 12 + 498 + 2 + 49 + 99 = 666.

It is not a de Polignac number, because 61249824999 - 2⁵ = 61249824967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61249824989) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 11547382 + ... + 11552684.

It is an arithmetic number, because the mean of its divisors is an integer number (1085994000).

Almost surely, 2^61249824999 is an apocalyptic number.

61249824999 is a deficient number, since it is larger than the sum of its proper divisors (43005599001).

61249824999 is a wasteful number, since it uses less digits than its factorization.

61249824999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507 (or 5495 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 61249824999 in words is "sixty-one billion, two hundred forty-nine million, eight hundred twenty-four thousand, nine hundred ninety-nine".