77657035145 has 16 divisors (see below), whose sum is σ = 93955118400. Its totient is φ = 61615070400.

The previous prime is 77657035117. The next prime is 77657035199. The reversal of 77657035145 is 54153075677.

It is not a de Polignac number, because 77657035145 - 2¹⁰ = 77657034121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77657035093 and 77657035102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106306 + ... + 1174404.

It is an arithmetic number, because the mean of its divisors is an integer number (5872194900).

Almost surely, 2^77657035145 is an apocalyptic number.

It is an amenable number.

77657035145 is a deficient number, since it is larger than the sum of its proper divisors (16298083255).

77657035145 is a wasteful number, since it uses less digits than its factorization.

77657035145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69976.

The product of its (nonzero) digits is 3087000, while the sum is 50.

The spelling of 77657035145 in words is "seventy-seven billion, six hundred fifty-seven million, thirty-five thousand, one hundred forty-five".