7028011261 has 4 divisors (see below), whose sum is σ = 7333576992. Its totient is φ = 6722445532.

The previous prime is 7028011241. The next prime is 7028011273. The reversal of 7028011261 is 1621108207.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1621108207 = 29 ⋅55900283.

It is a cyclic number.

It is not a de Polignac number, because 7028011261 - 2¹⁵ = 7027978493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7028011241) 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, 152782831 + ... + 152782876.

It is an arithmetic number, because the mean of its divisors is an integer number (1833394248).

Almost surely, 2^7028011261 is an apocalyptic number.

It is an amenable number.

7028011261 is a deficient number, since it is larger than the sum of its proper divisors (305565731).

7028011261 is a wasteful number, since it uses less digits than its factorization.

7028011261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305565730.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 7028011261 is about 83833.2348236664. The cubic root of 7028011261 is about 1915.4793875131.

Adding to 7028011261 its reverse (1621108207), we get a palindrome (8649119468).

The spelling of 7028011261 in words is "seven billion, twenty-eight million, eleven thousand, two hundred sixty-one".