77228820841 has 8 divisors (see below), whose sum is σ = 78321302784. Its totient is φ = 76136471040.

The previous prime is 77228820817. The next prime is 77228820887. The reversal of 77228820841 is 14802882277.

It is a happy number.

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 77228820841 - 2³¹ = 75081337193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77228820341) 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 7 ways as a sum of consecutive naturals, for example, 2245920 + ... + 2280046.

It is an arithmetic number, because the mean of its divisors is an integer number (9790162848).

Almost surely, 2^77228820841 is an apocalyptic number.

77228820841 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

77228820841 is a deficient number, since it is larger than the sum of its proper divisors (1092481943).

77228820841 is a wasteful number, since it uses less digits than its factorization.

77228820841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66071.

The product of its (nonzero) digits is 802816, while the sum is 49.

The spelling of 77228820841 in words is "seventy-seven billion, two hundred twenty-eight million, eight hundred twenty thousand, eight hundred forty-one".