1421311545440 has 48 divisors (see below), whose sum is σ = 3358835387712. Its totient is φ = 568357530624.

The previous prime is 1421311545403. The next prime is 1421311545487. The reversal of 1421311545440 is 445451131241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421311545440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758549 + ... + 1848788.

It is an arithmetic number, because the mean of its divisors is an integer number (69975737244).

Almost surely, 2^{1421311545440} is an apocalyptic number.

1421311545440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421311545440 is an abundant number, since it is smaller than the sum of its proper divisors (1937523842272).

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

1421311545440 is a wasteful number, since it uses less digits than its factorization.

1421311545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610759 (or 2610751 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 1421311545440 its reverse (445451131241), we get a palindrome (1866762676681).

The spelling of 1421311545440 in words is "one trillion, four hundred twenty-one billion, three hundred eleven million, five hundred forty-five thousand, four hundred forty".