146619167921 has 4 divisors (see below), whose sum is σ = 147039280500. Its totient is φ = 146199055344.

The previous prime is 146619167797. The next prime is 146619167927. The reversal of 146619167921 is 129761916641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97206768400 + 49412399521 = 311780^2 + 222289^2 .

It is a cyclic number.

It is not a de Polignac number, because 146619167921 - 2¹⁸ = 146618905777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146619167927) 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, 210055766 + ... + 210056463.

It is an arithmetic number, because the mean of its divisors is an integer number (36759820125).

Almost surely, 2^146619167921 is an apocalyptic number.

It is an amenable number.

146619167921 is a deficient number, since it is larger than the sum of its proper divisors (420112579).

146619167921 is an equidigital number, since it uses as much as digits as its factorization.

146619167921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420112578.

The product of its digits is 979776, while the sum is 53.

The spelling of 146619167921 in words is "one hundred forty-six billion, six hundred nineteen million, one hundred sixty-seven thousand, nine hundred twenty-one".