1421867257760 has 48 divisors (see below), whose sum is σ = 3474994559400. Its totient is φ = 549134939136.

The previous prime is 1421867257757. The next prime is 1421867257781. The reversal of 1421867257760 is 677527681241.

It can be written as a sum of positive squares in 4 ways, for example, as 878291357584 + 543575900176 = 937172^2 + 737276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1421867257696 and 1421867257705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153213815 + ... + 153223094.

Almost surely, 2^{1421867257760} is an apocalyptic number.

1421867257760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421867257760 is an abundant number, since it is smaller than the sum of its proper divisors (2053127301640).

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

1421867257760 is a wasteful number, since it uses less digits than its factorization.

1421867257760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306436953 (or 306436945 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 1421867257760 in words is "one trillion, four hundred twenty-one billion, eight hundred sixty-seven million, two hundred fifty-seven thousand, seven hundred sixty".