9997851064 has 16 divisors (see below), whose sum is σ = 18747618120. Its totient is φ = 4998486240.

The previous prime is 9997851049. The next prime is 9997851151. The reversal of 9997851064 is 4601587999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54679 + ... + 151609.

Almost surely, 2^9997851064 is an apocalyptic number.

It is an amenable number.

9997851064 is a deficient number, since it is larger than the sum of its proper divisors (8749767056).

9997851064 is a wasteful number, since it uses less digits than its factorization.

9997851064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109830 (or 109826 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The square root of 9997851064 is about 99989.2547426972. The cubic root of 9997851064 is about 2154.2803542339.

The spelling of 9997851064 in words is "nine billion, nine hundred ninety-seven million, eight hundred fifty-one thousand, sixty-four".