690809827911 has 16 divisors (see below), whose sum is σ = 1060346267904. Its totient is φ = 391867095744.

The previous prime is 690809827901. The next prime is 690809827963. The reversal of 690809827911 is 119728908096.

It is not a de Polignac number, because 690809827911 - 2¹⁸ = 690809565767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690809827901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120054445 + ... + 120060198.

It is an arithmetic number, because the mean of its divisors is an integer number (66271641744).

Almost surely, 2^690809827911 is an apocalyptic number.

690809827911 is a deficient number, since it is larger than the sum of its proper divisors (369536439993).

690809827911 is a wasteful number, since it uses less digits than its factorization.

690809827911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240114790.

The product of its (nonzero) digits is 3919104, while the sum is 60.

The spelling of 690809827911 in words is "six hundred ninety billion, eight hundred nine million, eight hundred twenty-seven thousand, nine hundred eleven".