77673050438 has 4 divisors (see below), whose sum is σ = 116509575660. Its totient is φ = 38836525218.

The previous prime is 77673050407. The next prime is 77673050447. The reversal of 77673050438 is 83405037677.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19418262608 + ... + 19418262611.

It is an arithmetic number, because the mean of its divisors is an integer number (29127393915).

Almost surely, 2^77673050438 is an apocalyptic number.

77673050438 is a deficient number, since it is larger than the sum of its proper divisors (38836525222).

77673050438 is a wasteful number, since it uses less digits than its factorization.

77673050438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38836525221.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 77673050438 in words is "seventy-seven billion, six hundred seventy-three million, fifty thousand, four hundred thirty-eight".