781041341835 has 128 divisors (see below), whose sum is σ = 1441750302720. Its totient is φ = 400859020800.

The previous prime is 781041341789. The next prime is 781041341863. The reversal of 781041341835 is 538143140187.

It is not a de Polignac number, because 781041341835 - 2²⁰ = 781040293259 is a prime.

It is a super-2 number, since 2×781041341835² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 172679884 + ... + 172684406.

It is an arithmetic number, because the mean of its divisors is an integer number (11263674240).

Almost surely, 2^781041341835 is an apocalyptic number.

781041341835 is a deficient number, since it is larger than the sum of its proper divisors (660708960885).

781041341835 is a wasteful number, since it uses less digits than its factorization.

781041341835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 781041341835 in words is "seven hundred eighty-one billion, forty-one million, three hundred forty-one thousand, eight hundred thirty-five".