1421511000256 has 28 divisors (see below), whose sum is σ = 2868621252840. Its totient is φ = 698708794880.

The previous prime is 1421511000233. The next prime is 1421511000307. The reversal of 1421511000256 is 6520001151241.

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, 188225965 + ... + 188233516.

It is an arithmetic number, because the mean of its divisors is an integer number (102450759030).

Almost surely, 2^{1421511000256} is an apocalyptic number.

1421511000256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1421511000256 is an abundant number, since it is smaller than the sum of its proper divisors (1447110252584).

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

1421511000256 is an equidigital number, since it uses as much as digits as its factorization.

1421511000256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376459552 (or 376459542 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 1421511000256 its reverse (6520001151241), we get a palindrome (7941512151497).

It can be divided in two parts, 14215 and 11000256, that added together give a triangular number (11014471 = T₄₆₉₃).

The spelling of 1421511000256 in words is "one trillion, four hundred twenty-one billion, five hundred eleven million, two hundred fifty-six", and thus it is an aban number.