77674937761 has 16 divisors (see below), whose sum is σ = 85334538240. Its totient is φ = 70373722320.

The previous prime is 77674937759. The next prime is 77674937831. The reversal of 77674937761 is 16773947677.

It is a cyclic number.

It is not a de Polignac number, because 77674937761 - 2¹ = 77674937759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77674937693 and 77674937702.

It is not an unprimeable number, because it can be changed into a prime (77674937731) 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, 2749096 + ... + 2777206.

It is an arithmetic number, because the mean of its divisors is an integer number (5333408640).

Almost surely, 2^77674937761 is an apocalyptic number.

It is an amenable number.

77674937761 is a deficient number, since it is larger than the sum of its proper divisors (7659600479).

77674937761 is a wasteful number, since it uses less digits than its factorization.

77674937761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34476.

The product of its digits is 65345616, while the sum is 64.

The spelling of 77674937761 in words is "seventy-seven billion, six hundred seventy-four million, nine hundred thirty-seven thousand, seven hundred sixty-one".