7166955840 has 448 divisors, whose sum is σ = 25702686720. Its totient is φ = 1691289600.

The previous prime is 7166955767. The next prime is 7166955853. The reversal of 7166955840 is 485596617.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90720921 + ... + 90720999.

Almost surely, 2^7166955840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7166955840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12851343360).

7166955840 is an abundant number, since it is smaller than the sum of its proper divisors (18535730880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7166955840 is a wasteful number, since it uses less digits than its factorization.

7166955840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 7166955840 is about 84657.8752391058. The cubic root of 7166955840 is about 1928.0201842437.

The spelling of 7166955840 in words is "seven billion, one hundred sixty-six million, nine hundred fifty-five thousand, eight hundred forty".