77344350291 has 12 divisors (see below), whose sum is σ = 120313433968. Its totient is φ = 47596523184.

The previous prime is 77344350241. The next prime is 77344350299. The reversal of 77344350291 is 19205344377.

77344350291 is a `hidden beast` number, since 7 + 7 + 3 + 4 + 4 + 350 + 291 = 666.

It is not a de Polignac number, because 77344350291 - 2⁹ = 77344349779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77344350299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330531295 + ... + 330531528.

Almost surely, 2^77344350291 is an apocalyptic number.

77344350291 is a deficient number, since it is larger than the sum of its proper divisors (42969083677).

77344350291 is a wasteful number, since it uses less digits than its factorization.

77344350291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661062842 (or 661062839 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 77344350291 in words is "seventy-seven billion, three hundred forty-four million, three hundred fifty thousand, two hundred ninety-one".