77070550355 has 4 divisors (see below), whose sum is σ = 92484660432. Its totient is φ = 61656440280.

The previous prime is 77070550343. The next prime is 77070550357. The reversal of 77070550355 is 55305507077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55305507077 = 61 ⋅906647657.

It is not a de Polignac number, because 77070550355 - 2⁸ = 77070550099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77070550357) 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, 7707055031 + ... + 7707055040.

It is an arithmetic number, because the mean of its divisors is an integer number (23121165108).

Almost surely, 2^77070550355 is an apocalyptic number.

77070550355 is a deficient number, since it is larger than the sum of its proper divisors (15414110077).

77070550355 is a wasteful number, since it uses less digits than its factorization.

77070550355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15414110076.

The product of its (nonzero) digits is 643125, while the sum is 44.

The spelling of 77070550355 in words is "seventy-seven billion, seventy million, five hundred fifty thousand, three hundred fifty-five".