781272085234 has 16 divisors (see below), whose sum is σ = 1176210216000. Its totient is φ = 389202184944.

The previous prime is 781272085229. The next prime is 781272085249. The reversal of 781272085234 is 432580272187.

It is a super-2 number, since 2×781272085234² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12310917 + ... + 12374215.

It is an arithmetic number, because the mean of its divisors is an integer number (73513138500).

Almost surely, 2^781272085234 is an apocalyptic number.

781272085234 is a deficient number, since it is larger than the sum of its proper divisors (394938130766).

781272085234 is a wasteful number, since it uses less digits than its factorization.

781272085234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85857.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 781272085234 in words is "seven hundred eighty-one billion, two hundred seventy-two million, eighty-five thousand, two hundred thirty-four".