1443172857450 has 48 divisors (see below), whose sum is σ = 3579426425856. Its totient is φ = 384807628800.

The previous prime is 1443172857443. The next prime is 1443172857461. The reversal of 1443172857450 is 547582713441.

It is a junction number, because it is equal to n+sod(n) for n = 1443172857393 and 1443172857402.

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, 1040874 + ... + 1992426.

It is an arithmetic number, because the mean of its divisors is an integer number (74571383872).

Almost surely, 2^{1443172857450} is an apocalyptic number.

1443172857450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1443172857450 is an abundant number, since it is smaller than the sum of its proper divisors (2136253568406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1443172857450 is a wasteful number, since it uses less digits than its factorization.

1443172857450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961679 (or 961674 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 1443172857450 in words is "one trillion, four hundred forty-three billion, one hundred seventy-two million, eight hundred fifty-seven thousand, four hundred fifty".