78208958207 has 4 divisors (see below), whose sum is σ = 78215903520. Its totient is φ = 78202012896.

The previous prime is 78208958203. The next prime is 78208958279. The reversal of 78208958207 is 70285980287.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70285980287 = 79 ⋅889695953.

It is a cyclic number.

It is not a de Polignac number, because 78208958207 - 2² = 78208958203 is a prime.

It is a super-2 number, since 2×78208958207² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78208958203) 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, 3455738 + ... + 3478295.

It is an arithmetic number, because the mean of its divisors is an integer number (19553975880).

Almost surely, 2^78208958207 is an apocalyptic number.

78208958207 is a deficient number, since it is larger than the sum of its proper divisors (6945313).

78208958207 is a wasteful number, since it uses less digits than its factorization.

78208958207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6945312.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 78208958207 in words is "seventy-eight billion, two hundred eight million, nine hundred fifty-eight thousand, two hundred seven".