7266291161 has 4 divisors (see below), whose sum is σ = 7303940532. Its totient is φ = 7228641792.

The previous prime is 7266291121. The next prime is 7266291173. The reversal of 7266291161 is 1611926627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3320064400 + 3946226761 = 57620^2 + 62819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7266291161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7266291121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18824396 + ... + 18824781.

It is an arithmetic number, because the mean of its divisors is an integer number (1825985133).

Almost surely, 2^7266291161 is an apocalyptic number.

It is an amenable number.

7266291161 is a deficient number, since it is larger than the sum of its proper divisors (37649371).

7266291161 is a wasteful number, since it uses less digits than its factorization.

7266291161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37649370.

The product of its digits is 54432, while the sum is 41.

The square root of 7266291161 is about 85242.5431401480. The cubic root of 7266291161 is about 1936.8869157048.

The spelling of 7266291161 in words is "seven billion, two hundred sixty-six million, two hundred ninety-one thousand, one hundred sixty-one".