781897241082 has 16 divisors (see below), whose sum is σ = 1564280020512. Its totient is φ = 260551490640.

The previous prime is 781897241077. The next prime is 781897241089. The reversal of 781897241082 is 280142798187.

It is a happy number.

781897241082 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×781897241082² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (781897241089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20209828 + ... + 20248479.

It is an arithmetic number, because the mean of its divisors is an integer number (97767501282).

Almost surely, 2^781897241082 is an apocalyptic number.

781897241082 is an abundant number, since it is smaller than the sum of its proper divisors (782382779430).

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

781897241082 is a wasteful number, since it uses less digits than its factorization.

781897241082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40461533.

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 781897241082 in words is "seven hundred eighty-one billion, eight hundred ninety-seven million, two hundred forty-one thousand, eighty-two".