21053450510 has 8 divisors (see below), whose sum is σ = 37896210936. Its totient is φ = 8421380200.

The previous prime is 21053450501. The next prime is 21053450519. The reversal of 21053450510 is 1505435012.

It is an interprime number because it is at equal distance from previous prime (21053450501) and next prime (21053450519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21053450510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21053450519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052672516 + ... + 1052672535.

It is an arithmetic number, because the mean of its divisors is an integer number (4737026367).

Almost surely, 2^21053450510 is an apocalyptic number.

21053450510 is a deficient number, since it is larger than the sum of its proper divisors (16842760426).

21053450510 is a wasteful number, since it uses less digits than its factorization.

21053450510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105345058.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 21053450510 its reverse (1505435012), we get a palindrome (22558885522).

The spelling of 21053450510 in words is "twenty-one billion, fifty-three million, four hundred fifty thousand, five hundred ten".