78950066338 has 16 divisors (see below), whose sum is σ = 139128788736. Its totient is φ = 33125901840.

The previous prime is 78950066297. The next prime is 78950066341. The reversal of 78950066338 is 83366005987.

It is a super-2 number, since 2×78950066338² (a number of 23 digits) contains 22 as substring.

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, 138024306 + ... + 138024877.

It is an arithmetic number, because the mean of its divisors is an integer number (8695549296).

Almost surely, 2^78950066338 is an apocalyptic number.

78950066338 is a deficient number, since it is larger than the sum of its proper divisors (60178722398).

78950066338 is a wasteful number, since it uses less digits than its factorization.

78950066338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276049209.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 78950066338 in words is "seventy-eight billion, nine hundred fifty million, sixty-six thousand, three hundred thirty-eight".