75876640249 has 2 divisors, whose sum is σ = 75876640250. Its totient is φ = 75876640248.

The previous prime is 75876640237. The next prime is 75876640291. The reversal of 75876640249 is 94204667857.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60987759849 + 14888880400 = 246957^2 + 122020^2 .

It is a cyclic number.

It is not a de Polignac number, because 75876640249 - 2²¹ = 75874543097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75876640193 and 75876640202.

It is not a weakly prime, because it can be changed into another prime (75876641249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37938320124 + 37938320125.

It is an arithmetic number, because the mean of its divisors is an integer number (37938320125).

Almost surely, 2^75876640249 is an apocalyptic number.

It is an amenable number.

75876640249 is a deficient number, since it is larger than the sum of its proper divisors (1).

75876640249 is an equidigital number, since it uses as much as digits as its factorization.

75876640249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 75876640249 in words is "seventy-five billion, eight hundred seventy-six million, six hundred forty thousand, two hundred forty-nine".