77091616243 has 8 divisors (see below), whose sum is σ = 78987441456. Its totient is φ = 75196531200.

The previous prime is 77091616237. The next prime is 77091616279. The reversal of 77091616243 is 34261619077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77091616243 - 2¹³ = 77091608051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77091616193 and 77091616202.

It is not an unprimeable number, because it can be changed into a prime (77091646243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28828 + ... + 393718.

It is an arithmetic number, because the mean of its divisors is an integer number (9873430182).

Almost surely, 2^77091616243 is an apocalyptic number.

77091616243 is a deficient number, since it is larger than the sum of its proper divisors (1895825213).

77091616243 is a wasteful number, since it uses less digits than its factorization.

77091616243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370085.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 77091616243 in words is "seventy-seven billion, ninety-one million, six hundred sixteen thousand, two hundred forty-three".