77690698459 has 8 divisors (see below), whose sum is σ = 87044124528. Its totient is φ = 68719044960.

The previous prime is 77690698433. The next prime is 77690698483. The reversal of 77690698459 is 95489609677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77690698459 - 2⁹ = 77690697947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77690698859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95442712 + ... + 95443525.

It is an arithmetic number, because the mean of its divisors is an integer number (10880515566).

Almost surely, 2^77690698459 is an apocalyptic number.

77690698459 is a deficient number, since it is larger than the sum of its proper divisors (9353426069).

77690698459 is a wasteful number, since it uses less digits than its factorization.

77690698459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190886285.

The product of its (nonzero) digits is 205752960, while the sum is 70.

The spelling of 77690698459 in words is "seventy-seven billion, six hundred ninety million, six hundred ninety-eight thousand, four hundred fifty-nine".