87785058778 has 8 divisors (see below), whose sum is σ = 137402700768. Its totient is φ = 41984158524.

The previous prime is 87785058761. The next prime is 87785058791.

87785058778 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954185376 + ... + 954185467.

It is an arithmetic number, because the mean of its divisors is an integer number (17175337596).

Almost surely, 2^87785058778 is an apocalyptic number.

87785058778 is a deficient number, since it is larger than the sum of its proper divisors (49617641990).

87785058778 is a wasteful number, since it uses less digits than its factorization.

87785058778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908370868.

The product of its (nonzero) digits is 245862400, while the sum is 70.

The spelling of 87785058778 in words is "eighty-seven billion, seven hundred eighty-five million, fifty-eight thousand, seven hundred seventy-eight".