77802268502113 has 4 divisors (see below), whose sum is σ = 77805649615408. Its totient is φ = 77798887388820.

The previous prime is 77802268502099. The next prime is 77802268502173. The reversal of 77802268502113 is 31120586220877.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77802268502113 - 2²⁵ = 77802234947681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77802268502173) 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, 1690522131 + ... + 1690568152.

It is an arithmetic number, because the mean of its divisors is an integer number (19451412403852).

Almost surely, 2^{77802268502113} is an apocalyptic number.

It is an amenable number.

77802268502113 is a deficient number, since it is larger than the sum of its proper divisors (3381113295).

77802268502113 is a wasteful number, since it uses less digits than its factorization.

77802268502113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381113294.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 77802268502113 in words is "seventy-seven trillion, eight hundred two billion, two hundred sixty-eight million, five hundred two thousand, one hundred thirteen".