1521140213140 has 24 divisors (see below), whose sum is σ = 3196838568672. Its totient is φ = 607990538400.

The previous prime is 1521140213137. The next prime is 1521140213221. The reversal of 1521140213140 is 413120411251.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29069886 + ... + 29122165.

It is an arithmetic number, because the mean of its divisors is an integer number (133201607028).

Almost surely, 2^{1521140213140} is an apocalyptic number.

1521140213140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1521140213140 is an abundant number, since it is smaller than the sum of its proper divisors (1675698355532).

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

1521140213140 is a wasteful number, since it uses less digits than its factorization.

1521140213140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58193367 (or 58193365 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1521140213140 its reverse (413120411251), we get a palindrome (1934260624391).

The spelling of 1521140213140 in words is "one trillion, five hundred twenty-one billion, one hundred forty million, two hundred thirteen thousand, one hundred forty".