77293786633 has 12 divisors (see below), whose sum is σ = 90046030212. Its totient is φ = 66153927840.

The previous prime is 77293786631. The next prime is 77293786651. The reversal of 77293786633 is 33668739277.

It can be written as a sum of positive squares in 2 ways, for example, as 64172542329 + 13121244304 = 253323^2 + 114548^2 .

It is not a de Polignac number, because 77293786633 - 2¹ = 77293786631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77293786631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1131838 + ... + 1198183.

It is an arithmetic number, because the mean of its divisors is an integer number (7503835851).

Almost surely, 2^77293786633 is an apocalyptic number.

It is an amenable number.

77293786633 is a deficient number, since it is larger than the sum of its proper divisors (12752243579).

77293786633 is a wasteful number, since it uses less digits than its factorization.

77293786633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330712 (or 2330705 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 61.

The spelling of 77293786633 in words is "seventy-seven billion, two hundred ninety-three million, seven hundred eighty-six thousand, six hundred thirty-three".