1555014420140 has 96 divisors (see below), whose sum is σ = 3328525025280. Its totient is φ = 610141165056.

The previous prime is 1555014420101. The next prime is 1555014420149. The reversal of 1555014420140 is 410244105551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1555014420097 and 1555014420106.

It is not an unprimeable number, because it can be changed into a prime (1555014420149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135177629 + ... + 135189131.

It is an arithmetic number, because the mean of its divisors is an integer number (34672135680).

Almost surely, 2^{1555014420140} is an apocalyptic number.

1555014420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1555014420140 is an abundant number, since it is smaller than the sum of its proper divisors (1773510605140).

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

1555014420140 is a wasteful number, since it uses less digits than its factorization.

1555014420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231 (or 12229 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 1555014420140 its reverse (410244105551), we get a palindrome (1965258525691).

The spelling of 1555014420140 in words is "one trillion, five hundred fifty-five billion, fourteen million, four hundred twenty thousand, one hundred forty".