77666673341 has 4 divisors (see below), whose sum is σ = 77671597632. Its totient is φ = 77661749052.

The previous prime is 77666673311. The next prime is 77666673373. The reversal of 77666673341 is 14337666677.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77666673341 is a prime.

It is a super-2 number, since 2×77666673341² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77666673311) 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, 2438411 + ... + 2470056.

It is an arithmetic number, because the mean of its divisors is an integer number (19417899408).

Almost surely, 2^77666673341 is an apocalyptic number.

It is an amenable number.

77666673341 is a deficient number, since it is larger than the sum of its proper divisors (4924291).

77666673341 is a wasteful number, since it uses less digits than its factorization.

77666673341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924290.

The product of its digits is 16003008, while the sum is 56.

The spelling of 77666673341 in words is "seventy-seven billion, six hundred sixty-six million, six hundred seventy-three thousand, three hundred forty-one".