7491166538956 has 12 divisors (see below), whose sum is σ = 13109791464000. Its totient is φ = 3745511834960.

The previous prime is 7491166538953. The next prime is 7491166539001. The reversal of 7491166538956 is 6598356611947.

It is a super-2 number, since 2×7491166538956² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7491166538953) 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 3 ways as a sum of consecutive naturals, for example, 17622331 + ... + 18042418.

It is an arithmetic number, because the mean of its divisors is an integer number (1092482622000).

Almost surely, 2^{7491166538956} is an apocalyptic number.

It is an amenable number.

7491166538956 is a deficient number, since it is larger than the sum of its proper divisors (5618624925044).

7491166538956 is a wasteful number, since it uses less digits than its factorization.

7491166538956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35717264 (or 35717262 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 70.

The spelling of 7491166538956 in words is "seven trillion, four hundred ninety-one billion, one hundred sixty-six million, five hundred thirty-eight thousand, nine hundred fifty-six".