145644450290 has 8 divisors (see below), whose sum is σ = 262160010540. Its totient is φ = 58257780112.

The previous prime is 145644450173. The next prime is 145644450337. The reversal of 145644450290 is 92054446541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 141942823009 + 3701627281 = 376753^2 + 60841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7282222505 + ... + 7282222524.

Almost surely, 2^145644450290 is an apocalyptic number.

145644450290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145644450290 is a deficient number, since it is larger than the sum of its proper divisors (116515560250).

145644450290 is a wasteful number, since it uses less digits than its factorization.

145644450290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14564445036.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 145644450290 in words is "one hundred forty-five billion, six hundred forty-four million, four hundred fifty thousand, two hundred ninety".