145634899546 has 4 divisors (see below), whose sum is σ = 218452349322. Its totient is φ = 72817449772.

The previous prime is 145634899537. The next prime is 145634899591. The reversal of 145634899546 is 645998436541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645998436541 = 709 ⋅911140249.

It can be written as a sum of positive squares in only one way, i.e., 124330286025 + 21304613521 = 352605^2 + 145961^2 .

It is a super-2 number, since 2×145634899546² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36408724885 + ... + 36408724888.

Almost surely, 2^145634899546 is an apocalyptic number.

145634899546 is a deficient number, since it is larger than the sum of its proper divisors (72817449776).

145634899546 is an equidigital number, since it uses as much as digits as its factorization.

145634899546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72817449775.

The product of its digits is 111974400, while the sum is 64.

The spelling of 145634899546 in words is "one hundred forty-five billion, six hundred thirty-four million, eight hundred ninety-nine thousand, five hundred forty-six".