77077085547 has 48 divisors (see below), whose sum is σ = 135893569280. Its totient is φ = 37932649920.

The previous prime is 77077085543. The next prime is 77077085563. The reversal of 77077085547 is 74558077077.

It is not a de Polignac number, because 77077085547 - 2² = 77077085543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (77077085543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 749968 + ... + 846525.

Almost surely, 2^77077085547 is an apocalyptic number.

77077085547 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

77077085547 is a deficient number, since it is larger than the sum of its proper divisors (58816483733).

77077085547 is a wasteful number, since it uses less digits than its factorization.

77077085547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596544 (or 1596533 counting only the distinct ones).

The product of its (nonzero) digits is 13445600, while the sum is 57.

The spelling of 77077085547 in words is "seventy-seven billion, seventy-seven million, eighty-five thousand, five hundred forty-seven".