840992507211 has 32 divisors (see below), whose sum is σ = 1216474979328. Its totient is φ = 514712540160.

The previous prime is 840992507123. The next prime is 840992507213. The reversal of 840992507211 is 112705299048.

It is a happy number.

It is not a de Polignac number, because 840992507211 - 2¹⁹ = 840991982923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840992507213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11721930 + ... + 11793456.

It is an arithmetic number, because the mean of its divisors is an integer number (38014843104).

Almost surely, 2^840992507211 is an apocalyptic number.

840992507211 is a deficient number, since it is larger than the sum of its proper divisors (375482472117).

840992507211 is a wasteful number, since it uses less digits than its factorization.

840992507211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77211.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 840992507211 in words is "eight hundred forty billion, nine hundred ninety-two million, five hundred seven thousand, two hundred eleven".