77001010078 has 16 divisors (see below), whose sum is σ = 115992065376. Its totient is φ = 38337118560.

The previous prime is 77001010063. The next prime is 77001010109. The reversal of 77001010078 is 87001010077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200100 + ... + 1262632.

It is an arithmetic number, because the mean of its divisors is an integer number (7249504086).

Almost surely, 2^77001010078 is an apocalyptic number.

77001010078 is a deficient number, since it is larger than the sum of its proper divisors (38991055298).

77001010078 is a wasteful number, since it uses less digits than its factorization.

77001010078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65139.

The product of its (nonzero) digits is 2744, while the sum is 31.

Subtracting 77001010078 from its reverse (87001010077), we obtain a palindrome (9999999999).

The spelling of 77001010078 in words is "seventy-seven billion, one million, ten thousand, seventy-eight".