781348910112 has 576 divisors, whose sum is σ = 2573533347840. Its totient is φ = 223488460800.

The previous prime is 781348910101. The next prime is 781348910119. The reversal of 781348910112 is 211019843187.

It is a happy number.

It is a super-2 number, since 2×781348910112² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (781348910119) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183370062 + ... + 183374322.

It is an arithmetic number, because the mean of its divisors is an integer number (4467939840).

Almost surely, 2^781348910112 is an apocalyptic number.

781348910112 is a gapful number since it is divisible by the number (72) 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 781348910112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286766673920).

781348910112 is an abundant number, since it is smaller than the sum of its proper divisors (1792184437728).

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

781348910112 is a wasteful number, since it uses less digits than its factorization.

781348910112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397 (or 4386 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 781348910112 in words is "seven hundred eighty-one billion, three hundred forty-eight million, nine hundred ten thousand, one hundred twelve".