75418491249 has 12 divisors (see below), whose sum is σ = 110723687412. Its totient is φ = 49454748000.

The previous prime is 75418491233. The next prime is 75418491259. The reversal of 75418491249 is 94219481457.

75418491249 is a `hidden beast` number, since 7 + 541 + 8 + 4 + 91 + 2 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37813524849 + 37604966400 = 194457^2 + 193920^2 .

It is not a de Polignac number, because 75418491249 - 2⁴ = 75418491233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75418491195 and 75418491204.

It is not an unprimeable number, because it can be changed into a prime (75418491259) 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 11 ways as a sum of consecutive naturals, for example, 68686602 + ... + 68687699.

It is an arithmetic number, because the mean of its divisors is an integer number (9226973951).

Almost surely, 2^75418491249 is an apocalyptic number.

It is an amenable number.

75418491249 is a deficient number, since it is larger than the sum of its proper divisors (35305196163).

75418491249 is a wasteful number, since it uses less digits than its factorization.

75418491249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137374368 (or 137374365 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 75418491249 in words is "seventy-five billion, four hundred eighteen million, four hundred ninety-one thousand, two hundred forty-nine".