77007692394 has 12 divisors (see below), whose sum is σ = 166850000226. Its totient is φ = 25669230792.

The previous prime is 77007692389. The next prime is 77007692473. The reversal of 77007692394 is 49329670077.

It can be written as a sum of positive squares in only one way, i.e., 66673953369 + 10333739025 = 258213^2 + 101655^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77007692394.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2139102549 + ... + 2139102584.

Almost surely, 2^77007692394 is an apocalyptic number.

77007692394 is an abundant number, since it is smaller than the sum of its proper divisors (89842307832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77007692394 is a wasteful number, since it uses less digits than its factorization.

77007692394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278205141 (or 4278205138 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 54.

The spelling of 77007692394 in words is "seventy-seven billion, seven million, six hundred ninety-two thousand, three hundred ninety-four".