146543574731 has 2 divisors, whose sum is σ = 146543574732. Its totient is φ = 146543574730.

The previous prime is 146543574719. The next prime is 146543574739. The reversal of 146543574731 is 137475345641.

It is a strong prime.

It is an emirp because it is prime and its reverse (137475345641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146543574731 is a prime.

It is a super-2 number, since 2×146543574731² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146543574731.

It is not a weakly prime, because it can be changed into another prime (146543574739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73271787365 + 73271787366.

It is an arithmetic number, because the mean of its divisors is an integer number (73271787366).

Almost surely, 2^146543574731 is an apocalyptic number.

146543574731 is a deficient number, since it is larger than the sum of its proper divisors (1).

146543574731 is an equidigital number, since it uses as much as digits as its factorization.

146543574731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 50.

The spelling of 146543574731 in words is "one hundred forty-six billion, five hundred forty-three million, five hundred seventy-four thousand, seven hundred thirty-one".