78051209180 has 144 divisors (see below), whose sum is σ = 196099970976. Its totient is φ = 26000110080.

The previous prime is 78051209129. The next prime is 78051209263. The reversal of 78051209180 is 8190215087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39558674 + ... + 39560646.

It is an arithmetic number, because the mean of its divisors is an integer number (1361805354).

Almost surely, 2^78051209180 is an apocalyptic number.

78051209180 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78051209180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98049985488).

78051209180 is an abundant number, since it is smaller than the sum of its proper divisors (118048761796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78051209180 is a wasteful number, since it uses less digits than its factorization.

78051209180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124 (or 3115 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The spelling of 78051209180 in words is "seventy-eight billion, fifty-one million, two hundred nine thousand, one hundred eighty".