9051916521 has 24 divisors (see below), whose sum is σ = 12746979840. Its totient is φ = 5712915744.

The previous prime is 9051916507. The next prime is 9051916529. The reversal of 9051916521 is 1256191509.

It is not a de Polignac number, because 9051916521 - 2¹⁰ = 9051915497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9051916521.

It is not an unprimeable number, because it can be changed into a prime (9051916529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2422971 + ... + 2426703.

It is an arithmetic number, because the mean of its divisors is an integer number (531124160).

Almost surely, 2^9051916521 is an apocalyptic number.

It is an amenable number.

9051916521 is a deficient number, since it is larger than the sum of its proper divisors (3695063319).

9051916521 is a wasteful number, since it uses less digits than its factorization.

9051916521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013 (or 5994 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 39.

The square root of 9051916521 is about 95141.5604297092. The cubic root of 9051916521 is about 2084.0758130577.

The spelling of 9051916521 in words is "nine billion, fifty-one million, nine hundred sixteen thousand, five hundred twenty-one".