76280072449 has 4 divisors (see below), whose sum is σ = 87177225664. Its totient is φ = 65382919236.

The previous prime is 76280072443. The next prime is 76280072461. The reversal of 76280072449 is 94427008267.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76280072449 - 2¹⁵ = 76280039681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76280072443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5448576597 + ... + 5448576610.

It is an arithmetic number, because the mean of its divisors is an integer number (21794306416).

Almost surely, 2^76280072449 is an apocalyptic number.

It is an amenable number.

76280072449 is a deficient number, since it is larger than the sum of its proper divisors (10897153215).

76280072449 is a wasteful number, since it uses less digits than its factorization.

76280072449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10897153214.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 76280072449 in words is "seventy-six billion, two hundred eighty million, seventy-two thousand, four hundred forty-nine".