77135747347 has 4 divisors (see below), whose sum is σ = 77139899536. Its totient is φ = 77131595160.

The previous prime is 77135747323. The next prime is 77135747383. The reversal of 77135747347 is 74374753177.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77135747347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77135745347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048103 + ... + 2085424.

It is an arithmetic number, because the mean of its divisors is an integer number (19284974884).

Almost surely, 2^77135747347 is an apocalyptic number.

77135747347 is a deficient number, since it is larger than the sum of its proper divisors (4152189).

77135747347 is a wasteful number, since it uses less digits than its factorization.

77135747347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152188.

The product of its digits is 12101040, while the sum is 55.

The spelling of 77135747347 in words is "seventy-seven billion, one hundred thirty-five million, seven hundred forty-seven thousand, three hundred forty-seven".