78274215203 has 16 divisors (see below), whose sum is σ = 82905849600. Its totient is φ = 73694149920.

The previous prime is 78274215197. The next prime is 78274215221. The reversal of 78274215203 is 30251247287.

It is a cyclic number.

It is not a de Polignac number, because 78274215203 - 2¹² = 78274211107 is a prime.

It is a super-2 number, since 2×78274215203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78274215263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11695088 + ... + 11701778.

It is an arithmetic number, because the mean of its divisors is an integer number (5181615600).

Almost surely, 2^78274215203 is an apocalyptic number.

78274215203 is a deficient number, since it is larger than the sum of its proper divisors (4631634397).

78274215203 is a wasteful number, since it uses less digits than its factorization.

78274215203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10442.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 78274215203 in words is "seventy-eight billion, two hundred seventy-four million, two hundred fifteen thousand, two hundred three".