78116208629 has 4 divisors (see below), whose sum is σ = 78156664320. Its totient is φ = 78075752940.

The previous prime is 78116208487. The next prime is 78116208647. The reversal of 78116208629 is 92680261187.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78116208629 - 2²⁴ = 78099431413 is a prime.

It is a super-2 number, since 2×78116208629² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78116208659) 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, 20224949 + ... + 20228810.

It is an arithmetic number, because the mean of its divisors is an integer number (19539166080).

Almost surely, 2^78116208629 is an apocalyptic number.

It is an amenable number.

78116208629 is a deficient number, since it is larger than the sum of its proper divisors (40455691).

78116208629 is a wasteful number, since it uses less digits than its factorization.

78116208629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40455690.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 78116208629 in words is "seventy-eight billion, one hundred sixteen million, two hundred eight thousand, six hundred twenty-nine".