77741833863281 has 8 divisors (see below), whose sum is σ = 88850139158784. Its totient is φ = 66634110825120.

The previous prime is 77741833863269. The next prime is 77741833863299. The reversal of 77741833863281 is 18236833814777.

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 77741833863281 - 2⁶ = 77741833863217 is a prime.

It is a super-2 number, since 2×77741833863281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77741833863581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145278185 + ... + 145812326.

It is an arithmetic number, because the mean of its divisors is an integer number (11106267394848).

Almost surely, 2^{77741833863281} is an apocalyptic number.

It is an amenable number.

77741833863281 is a deficient number, since it is larger than the sum of its proper divisors (11108305295503).

77741833863281 is a wasteful number, since it uses less digits than its factorization.

77741833863281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291128671.

The product of its digits is 227598336, while the sum is 68.

The spelling of 77741833863281 in words is "seventy-seven trillion, seven hundred forty-one billion, eight hundred thirty-three million, eight hundred sixty-three thousand, two hundred eighty-one".