77802273303857 has 8 divisors (see below), whose sum is σ = 78373496025216. Its totient is φ = 77232304640512.

The previous prime is 77802273303851. The next prime is 77802273303967. The reversal of 77802273303857 is 75830337220877.

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 77802273303857 - 2⁴⁶ = 7433529126193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77802273303857.

It is not an unprimeable number, because it can be changed into a prime (77802273303851) 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, 313389968 + ... + 313638129.

It is an arithmetic number, because the mean of its divisors is an integer number (9796687003152).

Almost surely, 2^{77802273303857} is an apocalyptic number.

It is an amenable number.

77802273303857 is a deficient number, since it is larger than the sum of its proper divisors (571222721359).

77802273303857 is a wasteful number, since it uses less digits than its factorization.

77802273303857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627029007.

The product of its (nonzero) digits is 82978560, while the sum is 62.

The spelling of 77802273303857 in words is "seventy-seven trillion, eight hundred two billion, two hundred seventy-three million, three hundred three thousand, eight hundred fifty-seven".