781420035232 has 96 divisors (see below), whose sum is σ = 1585514020608. Its totient is φ = 378960000000.

The previous prime is 781420035217. The next prime is 781420035257. The reversal of 781420035232 is 232530024187.

It is a super-2 number, since 2×781420035232² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 781420035191 and 781420035200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49477257 + ... + 49493047.

It is an arithmetic number, because the mean of its divisors is an integer number (16515771048).

Almost surely, 2^781420035232 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 781420035232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792757010304).

781420035232 is an abundant number, since it is smaller than the sum of its proper divisors (804093985376).

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

781420035232 is a wasteful number, since it uses less digits than its factorization.

781420035232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16214 (or 16206 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 781420035232 in words is "seven hundred eighty-one billion, four hundred twenty million, thirty-five thousand, two hundred thirty-two".