77738756214207 has 16 divisors (see below), whose sum is σ = 113074722085248. Its totient is φ = 47114327875680.

The previous prime is 77738756214187. The next prime is 77738756214227. The reversal of 77738756214207 is 70241265783777.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77738756214187) and next prime (77738756214227).

It is not a de Polignac number, because 77738756214207 - 2²⁸ = 77738487778751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77738756214227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28871008 + ... + 31448570.

It is an arithmetic number, because the mean of its divisors is an integer number (7067170130328).

Almost surely, 2^{77738756214207} is an apocalyptic number.

77738756214207 is a deficient number, since it is larger than the sum of its proper divisors (35335965871041).

77738756214207 is a wasteful number, since it uses less digits than its factorization.

77738756214207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491510.

The product of its (nonzero) digits is 193616640, while the sum is 66.

The spelling of 77738756214207 in words is "seventy-seven trillion, seven hundred thirty-eight billion, seven hundred fifty-six million, two hundred fourteen thousand, two hundred seven".