76061449517 has 18 divisors (see below), whose sum is σ = 79430889546. Its totient is φ = 72808095360.

The previous prime is 76061449507. The next prime is 76061449537. The reversal of 76061449517 is 71594416067.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1786668361 + 74274781156 = 42269^2 + 272534^2 .

It is not a de Polignac number, because 76061449517 - 2⁴ = 76061449501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76061449507) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86334917 + ... + 86335797.

It is an arithmetic number, because the mean of its divisors is an integer number (4412827197).

Almost surely, 2^76061449517 is an apocalyptic number.

It is an amenable number.

76061449517 is a deficient number, since it is larger than the sum of its proper divisors (3369440029).

76061449517 is an frugal number, since it uses more digits than its factorization.

76061449517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 76061449517 in words is "seventy-six billion, sixty-one million, four hundred forty-nine thousand, five hundred seventeen".