243221142475 has 24 divisors (see below), whose sum is σ = 308192649408. Its totient is φ = 190324742400.

The previous prime is 243221142457. The next prime is 243221142499. The reversal of 243221142475 is 574241122342.

It is not a de Polignac number, because 243221142475 - 2⁵ = 243221142443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1962037 + ... + 2082313.

It is an arithmetic number, because the mean of its divisors is an integer number (12841360392).

Almost surely, 2^243221142475 is an apocalyptic number.

243221142475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243221142475 is a deficient number, since it is larger than the sum of its proper divisors (64971506933).

243221142475 is a wasteful number, since it uses less digits than its factorization.

243221142475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122055 (or 122050 counting only the distinct ones).

The product of its digits is 107520, while the sum is 37.

The spelling of 243221142475 in words is "two hundred forty-three billion, two hundred twenty-one million, one hundred forty-two thousand, four hundred seventy-five".