781302013133102 has 16 divisors (see below), whose sum is σ = 1240895530023120. Its totient is φ = 367670321547648.

The previous prime is 781302013133063. The next prime is 781302013133113. The reversal of 781302013133102 is 201331310203187.

It is a super-2 number, since 2×781302013133102² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27448577 + ... + 48125132.

It is an arithmetic number, because the mean of its divisors is an integer number (77555970626445).

Almost surely, 2^{781302013133102} is an apocalyptic number.

781302013133102 is a deficient number, since it is larger than the sum of its proper divisors (459593516890018).

781302013133102 is a wasteful number, since it uses less digits than its factorization.

781302013133102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75877795.

The product of its (nonzero) digits is 18144, while the sum is 35.

Adding to 781302013133102 its reverse (201331310203187), we get a palindrome (982633323336289).

The spelling of 781302013133102 in words is "seven hundred eighty-one trillion, three hundred two billion, thirteen million, one hundred thirty-three thousand, one hundred two".