145120633186 has 4 divisors (see below), whose sum is σ = 217680949782. Its totient is φ = 72560316592.

The previous prime is 145120633139. The next prime is 145120633193. The reversal of 145120633186 is 681336021541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 681336021541 = 7 ⋅97333717363.

It can be written as a sum of positive squares in only one way, i.e., 137140605625 + 7980027561 = 370325^2 + 89331^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280158295 + ... + 36280158298.

Almost surely, 2^145120633186 is an apocalyptic number.

145120633186 is a deficient number, since it is larger than the sum of its proper divisors (72560316596).

145120633186 is an equidigital number, since it uses as much as digits as its factorization.

145120633186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72560316595.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 145120633186 in words is "one hundred forty-five billion, one hundred twenty million, six hundred thirty-three thousand, one hundred eighty-six".