9981251602 has 16 divisors (see below), whose sum is σ = 17345112192. Its totient is φ = 4219080480.

The previous prime is 9981251593. The next prime is 9981251611. The reversal of 9981251602 is 2061521899.

It is an interprime number because it is at equal distance from previous prime (9981251593) and next prime (9981251611).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4882174 + ... + 4884217.

It is an arithmetic number, because the mean of its divisors is an integer number (1084069512).

Almost surely, 2^9981251602 is an apocalyptic number.

9981251602 is a deficient number, since it is larger than the sum of its proper divisors (7363860590).

9981251602 is a wasteful number, since it uses less digits than its factorization.

9981251602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766473.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 9981251602 is about 99906.2140309601. The cubic root of 9981251602 is about 2153.0874410877.

The spelling of 9981251602 in words is "nine billion, nine hundred eighty-one million, two hundred fifty-one thousand, six hundred two".