21040015150 has 96 divisors (see below), whose sum is σ = 51661193472. Its totient is φ = 6172147200.

The previous prime is 21040015121. The next prime is 21040015153. The reversal of 21040015150 is 5151004012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21040015153) 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 47 ways as a sum of consecutive naturals, for example, 95284 + ... + 226183.

It is an arithmetic number, because the mean of its divisors is an integer number (538137432).

Almost surely, 2^21040015150 is an apocalyptic number.

21040015150 is an abundant number, since it is smaller than the sum of its proper divisors (30621178322).

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

21040015150 is a wasteful number, since it uses less digits than its factorization.

21040015150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321514 (or 321509 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 21040015150 its reverse (5151004012), we get a palindrome (26191019162).

The spelling of 21040015150 in words is "twenty-one billion, forty million, fifteen thousand, one hundred fifty".