77285484991 has 16 divisors (see below), whose sum is σ = 93725872128. Its totient is φ = 62762853600.

The previous prime is 77285484973. The next prime is 77285485061. The reversal of 77285484991 is 19948458277.

It is a cyclic number.

It is not a de Polignac number, because 77285484991 - 2¹⁷ = 77285353919 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 (77285484931) 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, 8712631 + ... + 8721496.

It is an arithmetic number, because the mean of its divisors is an integer number (5857867008).

Almost surely, 2^77285484991 is an apocalyptic number.

77285484991 is a deficient number, since it is larger than the sum of its proper divisors (16440387137).

77285484991 is a wasteful number, since it uses less digits than its factorization.

77285484991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17434182.

The product of its digits is 40642560, while the sum is 64.

The spelling of 77285484991 in words is "seventy-seven billion, two hundred eighty-five million, four hundred eighty-four thousand, nine hundred ninety-one".