78247445051152 has 80 divisors (see below), whose sum is σ = 165192159025152. Its totient is φ = 35690422763520.

The previous prime is 78247445051117. The next prime is 78247445051161. The reversal of 78247445051152 is 25115054474287.

It is a super-2 number, since 2×78247445051152² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78247445051093 and 78247445051102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026027 + ... + 12551797.

Almost surely, 2^{78247445051152} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78247445051152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82596079512576).

78247445051152 is an abundant number, since it is smaller than the sum of its proper divisors (86944713974000).

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

78247445051152 is a wasteful number, since it uses less digits than its factorization.

78247445051152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526176 (or 11526170 counting only the distinct ones).

The product of its (nonzero) digits is 12544000, while the sum is 55.

The spelling of 78247445051152 in words is "seventy-eight trillion, two hundred forty-seven billion, four hundred forty-five million, fifty-one thousand, one hundred fifty-two".