77851482981941 has 16 divisors (see below), whose sum is σ = 80957107249200. Its totient is φ = 74774821632000.

The previous prime is 77851482981913. The next prime is 77851482981953. The reversal of 77851482981941 is 14918928415877.

It can be written as a sum of positive squares in 8 ways, for example, as 67108974916 + 77784374007025 = 259054^2 + 8819545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77851482981941 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 (77851482981901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3050456 + ... + 12845553.

It is an arithmetic number, because the mean of its divisors is an integer number (5059819203075).

Almost surely, 2^{77851482981941} is an apocalyptic number.

It is an amenable number.

77851482981941 is a deficient number, since it is larger than the sum of its proper divisors (3105624267259).

77851482981941 is a wasteful number, since it uses less digits than its factorization.

77851482981941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15896920.

The product of its digits is 325140480, while the sum is 74.

The spelling of 77851482981941 in words is "seventy-seven trillion, eight hundred fifty-one billion, four hundred eighty-two million, nine hundred eighty-one thousand, nine hundred forty-one".