21150545510 has 16 divisors (see below), whose sum is σ = 38073769200. Its totient is φ = 8459598816.

The previous prime is 21150545503. The next prime is 21150545519. The reversal of 21150545510 is 1554505112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150545519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81536 + ... + 221244.

It is an arithmetic number, because the mean of its divisors is an integer number (2379610575).

Almost surely, 2^21150545510 is an apocalyptic number.

21150545510 is a deficient number, since it is larger than the sum of its proper divisors (16923223690).

21150545510 is a wasteful number, since it uses less digits than its factorization.

21150545510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154855.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 21150545510 in words is "twenty-one billion, one hundred fifty million, five hundred forty-five thousand, five hundred ten".