78250388836305 has 48 divisors (see below), whose sum is σ = 145647205824960. Its totient is φ = 35770214729088.

The previous prime is 78250388836273. The next prime is 78250388836327. The reversal of 78250388836305 is 50363888305287.

It is not a de Polignac number, because 78250388836305 - 2⁵ = 78250388836273 is a prime.

It is a super-2 number, since 2×78250388836305² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16954351 + ... + 21070139.

It is an arithmetic number, because the mean of its divisors is an integer number (3034316788020).

Almost surely, 2^{78250388836305} is an apocalyptic number.

It is an amenable number.

78250388836305 is a deficient number, since it is larger than the sum of its proper divisors (67396816988655).

78250388836305 is a wasteful number, since it uses less digits than its factorization.

78250388836305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141678 (or 4141671 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 66.

The spelling of 78250388836305 in words is "seventy-eight trillion, two hundred fifty billion, three hundred eighty-eight million, eight hundred thirty-six thousand, three hundred five".