781962434441 has 8 divisors (see below), whose sum is σ = 805668317640. Its totient is φ = 758588102272.

The previous prime is 781962434431. The next prime is 781962434479. The reversal of 781962434441 is 144434269187.

781962434441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2379390841 + 779583043600 = 48779^2 + 882940^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 781962434441 - 2³⁸ = 507084527497 is a prime.

It is a super-2 number, since 2×781962434441² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (781962434431) 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, 82882970 + ... + 82892403.

It is an arithmetic number, because the mean of its divisors is an integer number (100708539705).

Almost surely, 2^781962434441 is an apocalyptic number.

It is an amenable number.

781962434441 is a deficient number, since it is larger than the sum of its proper divisors (23705883199).

781962434441 is a wasteful number, since it uses less digits than its factorization.

781962434441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165775515.

The product of its digits is 4644864, while the sum is 53.

The spelling of 781962434441 in words is "seven hundred eighty-one billion, nine hundred sixty-two million, four hundred thirty-four thousand, four hundred forty-one".