690268051161 has 12 divisors (see below), whose sum is σ = 1073750301988. Its totient is φ = 424780339104.

The previous prime is 690268051141. The next prime is 690268051201. The reversal of 690268051161 is 161150862096.

It can be written as a sum of positive squares in 2 ways, for example, as 205622343936 + 484645707225 = 453456^2 + 696165^2 .

It is not a de Polignac number, because 690268051161 - 2¹⁴ = 690268034777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690268051141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2949863350 + ... + 2949863583.

Almost surely, 2^690268051161 is an apocalyptic number.

It is an amenable number.

690268051161 is a deficient number, since it is larger than the sum of its proper divisors (383482250827).

690268051161 is a wasteful number, since it uses less digits than its factorization.

690268051161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5899726952 (or 5899726949 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 690268051161 in words is "six hundred ninety billion, two hundred sixty-eight million, fifty-one thousand, one hundred sixty-one".