77730258885 has 16 divisors (see below), whose sum is σ = 126476354880. Its totient is φ = 40753491200.

The previous prime is 77730258871. The next prime is 77730258901. The reversal of 77730258885 is 58885203777.

It is not a de Polignac number, because 77730258885 - 2²¹ = 77728161733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43914516 + ... + 43916285.

It is an arithmetic number, because the mean of its divisors is an integer number (7904772180).

Almost surely, 2^77730258885 is an apocalyptic number.

It is an amenable number.

77730258885 is a deficient number, since it is larger than the sum of its proper divisors (48746095995).

77730258885 is a wasteful number, since it uses less digits than its factorization.

77730258885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87830868.

The product of its (nonzero) digits is 26342400, while the sum is 60.

The spelling of 77730258885 in words is "seventy-seven billion, seven hundred thirty million, two hundred fifty-eight thousand, eight hundred eighty-five".