77800468224261 has 4 divisors (see below), whose sum is σ = 103733957632352. Its totient is φ = 51866978816172.

The previous prime is 77800468224251. The next prime is 77800468224289. The reversal of 77800468224261 is 16242286400877.

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 not a de Polignac number, because 77800468224261 - 2⁶ = 77800468224197 is a prime.

It is a super-2 number, since 2×77800468224261² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77800468224211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12966744704041 + ... + 12966744704046.

It is an arithmetic number, because the mean of its divisors is an integer number (25933489408088).

Almost surely, 2^{77800468224261} is an apocalyptic number.

It is an amenable number.

77800468224261 is a deficient number, since it is larger than the sum of its proper divisors (25933489408091).

77800468224261 is a wasteful number, since it uses less digits than its factorization.

77800468224261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25933489408090.

The product of its (nonzero) digits is 14450688, while the sum is 57.

The spelling of 77800468224261 in words is "seventy-seven trillion, eight hundred billion, four hundred sixty-eight million, two hundred twenty-four thousand, two hundred sixty-one".