85077778348 has 6 divisors (see below), whose sum is σ = 148886112116. Its totient is φ = 42538889172.

The previous prime is 85077778327. The next prime is 85077778351. The reversal of 85077778348 is 84387777058.

It is a self number, because there is not a number n which added to its sum of digits gives 85077778348.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10634722290 + ... + 10634722297.

Almost surely, 2^85077778348 is an apocalyptic number.

It is an amenable number.

85077778348 is a deficient number, since it is larger than the sum of its proper divisors (63808333768).

85077778348 is a wasteful number, since it uses less digits than its factorization.

85077778348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21269444591 (or 21269444589 counting only the distinct ones).

The product of its (nonzero) digits is 73758720, while the sum is 64.

The spelling of 85077778348 in words is "eighty-five billion, seventy-seven million, seven hundred seventy-eight thousand, three hundred forty-eight".