78398708607 has 6 divisors (see below), whose sum is σ = 113242579112. Its totient is φ = 52265805732.

The previous prime is 78398708581. The next prime is 78398708621. The reversal of 78398708607 is 70680789387.

It is not a de Polignac number, because 78398708607 - 2¹¹ = 78398706559 is a prime.

It is a super-2 number, since 2×78398708607² (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 (78398708677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4355483803 + ... + 4355483820.

Almost surely, 2^78398708607 is an apocalyptic number.

78398708607 is a deficient number, since it is larger than the sum of its proper divisors (34843870505).

78398708607 is a wasteful number, since it uses less digits than its factorization.

78398708607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710967629 (or 8710967626 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 78398708607 in words is "seventy-eight billion, three hundred ninety-eight million, seven hundred eight thousand, six hundred seven".