7145378685 has 32 divisors (see below), whose sum is σ = 12712128000. Its totient is φ = 3808099008.

The previous prime is 7145378663. The next prime is 7145378687. The reversal of 7145378685 is 5868735417.

It is a happy number.

It is not a de Polignac number, because 7145378685 - 2¹⁵ = 7145345917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145378687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174396 + ... + 211434.

It is an arithmetic number, because the mean of its divisors is an integer number (397254000).

Almost surely, 2^7145378685 is an apocalyptic number.

It is an amenable number.

7145378685 is a deficient number, since it is larger than the sum of its proper divisors (5566749315).

7145378685 is a wasteful number, since it uses less digits than its factorization.

7145378685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38482 (or 38476 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 7145378685 is about 84530.3418010362. The cubic root of 7145378685 is about 1926.0833782481.

The spelling of 7145378685 in words is "seven billion, one hundred forty-five million, three hundred seventy-eight thousand, six hundred eighty-five".