7266881643 has 12 divisors (see below), whose sum is σ = 11271081960. Its totient is φ = 4152503712.

The previous prime is 7266881593. The next prime is 7266881729. The reversal of 7266881643 is 3461886627.

It is not a de Polignac number, because 7266881643 - 2⁹ = 7266881131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7266881243) 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, 24717138 + ... + 24717431.

It is an arithmetic number, because the mean of its divisors is an integer number (939256830).

Almost surely, 2^7266881643 is an apocalyptic number.

7266881643 is a deficient number, since it is larger than the sum of its proper divisors (4004200317).

7266881643 is a wasteful number, since it uses less digits than its factorization.

7266881643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49434586 (or 49434579 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 7266881643 is about 85246.0066102806. The cubic root of 7266881643 is about 1936.9393801536.

The spelling of 7266881643 in words is "seven billion, two hundred sixty-six million, eight hundred eighty-one thousand, six hundred forty-three".