77000007761 has 16 divisors (see below), whose sum is σ = 78088752000. Its totient is φ = 75917925888.

The previous prime is 77000007737. The next prime is 77000007793. The reversal of 77000007761 is 16770000077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77000007761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77000001761) 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, 36683090 + ... + 36685188.

It is an arithmetic number, because the mean of its divisors is an integer number (4880547000).

Almost surely, 2^77000007761 is an apocalyptic number.

It is an amenable number.

77000007761 is a deficient number, since it is larger than the sum of its proper divisors (1088744239).

77000007761 is a wasteful number, since it uses less digits than its factorization.

77000007761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448.

The product of its (nonzero) digits is 14406, while the sum is 35.

The spelling of 77000007761 in words is "seventy-seven billion, seven thousand, seven hundred sixty-one".