77328671458 has 4 divisors (see below), whose sum is σ = 115993007190. Its totient is φ = 38664335728.

The previous prime is 77328671423. The next prime is 77328671507. The reversal of 77328671458 is 85417682377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85417682377 = 1621 ⋅52694437.

It can be written as a sum of positive squares in only one way, i.e., 75447454329 + 1881217129 = 274677^2 + 43373^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19332167863 + ... + 19332167866.

Almost surely, 2^77328671458 is an apocalyptic number.

77328671458 is a deficient number, since it is larger than the sum of its proper divisors (38664335732).

77328671458 is a wasteful number, since it uses less digits than its factorization.

77328671458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38664335731.

The product of its digits is 15805440, while the sum is 58.

The spelling of 77328671458 in words is "seventy-seven billion, three hundred twenty-eight million, six hundred seventy-one thousand, four hundred fifty-eight".