797850809677 has 4 divisors (see below), whose sum is σ = 800218319836. Its totient is φ = 795483299520.

The previous prime is 797850809669. The next prime is 797850809681. The reversal of 797850809677 is 776908058797.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359009482276 + 438841327401 = 599174^2 + 662451^2 .

It is a cyclic number.

It is not a de Polignac number, because 797850809677 - 2³ = 797850809669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797850809477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183754574 + ... + 1183755247.

It is an arithmetic number, because the mean of its divisors is an integer number (200054579959).

Almost surely, 2^797850809677 is an apocalyptic number.

It is an amenable number.

797850809677 is a deficient number, since it is larger than the sum of its proper divisors (2367510159).

797850809677 is a wasteful number, since it uses less digits than its factorization.

797850809677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367510158.

The product of its (nonzero) digits is 373403520, while the sum is 73.

The spelling of 797850809677 in words is "seven hundred ninety-seven billion, eight hundred fifty million, eight hundred nine thousand, six hundred seventy-seven".