21440463150 has 48 divisors (see below), whose sum is σ = 55484198784. Its totient is φ = 5468870880.

The previous prime is 21440463137. The next prime is 21440463181. The reversal of 21440463150 is 5136404412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3103864 + ... + 3110763.

It is an arithmetic number, because the mean of its divisors is an integer number (1155920808).

Almost surely, 2^21440463150 is an apocalyptic number.

21440463150 is an abundant number, since it is smaller than the sum of its proper divisors (34043735634).

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

21440463150 is a wasteful number, since it uses less digits than its factorization.

21440463150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214665 (or 6214660 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 21440463150 its reverse (5136404412), we get a palindrome (26576867562).

The spelling of 21440463150 in words is "twenty-one billion, four hundred forty million, four hundred sixty-three thousand, one hundred fifty".