7145947019843 has 4 divisors (see below), whose sum is σ = 7339080723120. Its totient is φ = 6952813316568.

The previous prime is 7145947019833. The next prime is 7145947019879. The reversal of 7145947019843 is 3489107495417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7145947019843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145947019833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96566851583 + ... + 96566851656.

It is an arithmetic number, because the mean of its divisors is an integer number (1834770180780).

Almost surely, 2^{7145947019843} is an apocalyptic number.

7145947019843 is a deficient number, since it is larger than the sum of its proper divisors (193133703277).

7145947019843 is a wasteful number, since it uses less digits than its factorization.

7145947019843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193133703276.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 7145947019843 in words is "seven trillion, one hundred forty-five billion, nine hundred forty-seven million, nineteen thousand, eight hundred forty-three".