7261991627 has 8 divisors (see below), whose sum is σ = 8115396912. Its totient is φ = 6440790400.

The previous prime is 7261991617. The next prime is 7261991717.

7261991627 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-7261991627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7261991617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8050538 + ... + 8051439.

It is an arithmetic number, because the mean of its divisors is an integer number (1014424614).

Almost surely, 2^7261991627 is an apocalyptic number.

7261991627 is a deficient number, since it is larger than the sum of its proper divisors (853405285).

7261991627 is a wasteful number, since it uses less digits than its factorization.

7261991627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16102029.

The product of its digits is 571536, while the sum is 50.

The square root of 7261991627 is about 85217.3199942359. The cubic root of 7261991627 is about 1936.5048154911.

The spelling of 7261991627 in words is "seven billion, two hundred sixty-one million, nine hundred ninety-one thousand, six hundred twenty-seven".