78444210202 has 16 divisors (see below), whose sum is σ = 124602528960. Its totient is φ = 36910577088.

The previous prime is 78444210191. The next prime is 78444210223. The reversal of 78444210202 is 20201244487.

It is a super-2 number, since 2×78444210202² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 167083 + ... + 429889.

It is an arithmetic number, because the mean of its divisors is an integer number (7787658060).

Almost surely, 2^78444210202 is an apocalyptic number.

78444210202 is a deficient number, since it is larger than the sum of its proper divisors (46158318758).

78444210202 is a wasteful number, since it uses less digits than its factorization.

78444210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271605.

The product of its (nonzero) digits is 28672, while the sum is 34.

Adding to 78444210202 its reverse (20201244487), we get a palindrome (98645454689).

The spelling of 78444210202 in words is "seventy-eight billion, four hundred forty-four million, two hundred ten thousand, two hundred two".