76782742789477 has 8 divisors (see below), whose sum is σ = 77254698358656. Its totient is φ = 76310932204752.

The previous prime is 76782742789471. The next prime is 76782742789483. The reversal of 76782742789477 is 77498724728767.

It is an interprime number because it is at equal distance from previous prime (76782742789471) and next prime (76782742789483).

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 76782742789477 - 2³ = 76782742789469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76782742789394 and 76782742789403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76782742789471) 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, 35183578 + ... + 37302139.

It is an arithmetic number, because the mean of its divisors is an integer number (9656837294832).

Almost surely, 2^{76782742789477} is an apocalyptic number.

It is an amenable number.

76782742789477 is a deficient number, since it is larger than the sum of its proper divisors (471955569179).

76782742789477 is a wasteful number, since it uses less digits than its factorization.

76782742789477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72492227.

The product of its digits is 26022076416, while the sum is 85.

The spelling of 76782742789477 in words is "seventy-six trillion, seven hundred eighty-two billion, seven hundred forty-two million, seven hundred eighty-nine thousand, four hundred seventy-seven".