21096541516 has 6 divisors (see below), whose sum is σ = 36918947660. Its totient is φ = 10548270756.

The previous prime is 21096541481. The next prime is 21096541537. The reversal of 21096541516 is 61514569012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2637067686 + ... + 2637067693.

Almost surely, 2^21096541516 is an apocalyptic number.

It is an amenable number.

21096541516 is a deficient number, since it is larger than the sum of its proper divisors (15822406144).

21096541516 is a wasteful number, since it uses less digits than its factorization.

21096541516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274135383 (or 5274135381 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 21096541516 in words is "twenty-one billion, ninety-six million, five hundred forty-one thousand, five hundred sixteen".