77150666442 has 8 divisors (see below), whose sum is σ = 154301332896. Its totient is φ = 25716888812.

The previous prime is 77150666441. The next prime is 77150666447. The reversal of 77150666442 is 24466605177.

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

77150666442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77150666391 and 77150666400.

It is not an unprimeable number, because it can be changed into a prime (77150666441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6429222198 + ... + 6429222209.

It is an arithmetic number, because the mean of its divisors is an integer number (19287666612).

Almost surely, 2^77150666442 is an apocalyptic number.

77150666442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77150666442 is a wasteful number, since it uses less digits than its factorization.

77150666442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12858444412.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 77150666442 in words is "seventy-seven billion, one hundred fifty million, six hundred sixty-six thousand, four hundred forty-two".