77377447707 has 16 divisors (see below), whose sum is σ = 124844285952. Its totient is φ = 41614761600.

The previous prime is 77377447703. The next prime is 77377447717. The reversal of 77377447707 is 70774477377.

It is not a de Polignac number, because 77377447707 - 2² = 77377447703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77377447703) 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, 108371419 + ... + 108372132.

It is an arithmetic number, because the mean of its divisors is an integer number (7802767872).

Almost surely, 2^77377447707 is an apocalyptic number.

77377447707 is a deficient number, since it is larger than the sum of its proper divisors (47466838245).

77377447707 is a wasteful number, since it uses less digits than its factorization.

77377447707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216743578.

The product of its (nonzero) digits is 39530064, while the sum is 60.

The spelling of 77377447707 in words is "seventy-seven billion, three hundred seventy-seven million, four hundred forty-seven thousand, seven hundred seven".