7145844901 has 8 divisors (see below), whose sum is σ = 7696556280. Its totient is φ = 6595280832.

The previous prime is 7145844899. The next prime is 7145844917. The reversal of 7145844901 is 1094485417.

It can be written as a sum of positive squares in 4 ways, for example, as 140991876 + 7004853025 = 11874^2 + 83695^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7145844901 - 2¹ = 7145844899 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 (7145844301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76971 + ... + 142183.

It is an arithmetic number, because the mean of its divisors is an integer number (962069535).

Almost surely, 2^7145844901 is an apocalyptic number.

It is an amenable number.

7145844901 is a deficient number, since it is larger than the sum of its proper divisors (550711379).

7145844901 is a wasteful number, since it uses less digits than its factorization.

7145844901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73655.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 7145844901 is about 84533.0994403967. The cubic root of 7145844901 is about 1926.1252678572.

The spelling of 7145844901 in words is "seven billion, one hundred forty-five million, eight hundred forty-four thousand, nine hundred one".