77636379343 has 4 divisors (see below), whose sum is σ = 77638000608. Its totient is φ = 77634758080.

The previous prime is 77636379287. The next prime is 77636379347. The reversal of 77636379343 is 34397363677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34397363677 = 659 ⋅52196303.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77636379343 is a prime.

It is a super-2 number, since 2×77636379343² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77636379347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736546 + ... + 835327.

It is an arithmetic number, because the mean of its divisors is an integer number (19409500152).

Almost surely, 2^77636379343 is an apocalyptic number.

77636379343 is a deficient number, since it is larger than the sum of its proper divisors (1621265).

77636379343 is a wasteful number, since it uses less digits than its factorization.

77636379343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621264.

The product of its digits is 36006768, while the sum is 58.

The spelling of 77636379343 in words is "seventy-seven billion, six hundred thirty-six million, three hundred seventy-nine thousand, three hundred forty-three".