146521371499 has 4 divisors (see below), whose sum is σ = 152891865936. Its totient is φ = 140150877064.

The previous prime is 146521371457. The next prime is 146521371509. The reversal of 146521371499 is 994173125641.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 146521371499 - 2⁷ = 146521371371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146521371449) 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, 3185247184 + ... + 3185247229.

It is an arithmetic number, because the mean of its divisors is an integer number (38222966484).

Almost surely, 2^146521371499 is an apocalyptic number.

146521371499 is a deficient number, since it is larger than the sum of its proper divisors (6370494437).

146521371499 is an equidigital number, since it uses as much as digits as its factorization.

146521371499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370494436.

The product of its digits is 1632960, while the sum is 52.

The spelling of 146521371499 in words is "one hundred forty-six billion, five hundred twenty-one million, three hundred seventy-one thousand, four hundred ninety-nine".