9871623516 has 24 divisors (see below), whose sum is σ = 23103385984. Its totient is φ = 3280598640.

The previous prime is 9871623499. The next prime is 9871623571. The reversal of 9871623516 is 6153261789.

It is a congruent number.

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, 1238680 + ... + 1246623.

Almost surely, 2^9871623516 is an apocalyptic number.

It is an amenable number.

9871623516 is an abundant number, since it is smaller than the sum of its proper divisors (13231762468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9871623516 is a wasteful number, since it uses less digits than its factorization.

9871623516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485641 (or 2485639 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 9871623516 is about 99356.0441845387. The cubic root of 9871623516 is about 2145.1756632074.

It can be divided in two parts, 987 and 1623516, that added together give a triangular number (1624503 = T₁₈₀₂).

The spelling of 9871623516 in words is "nine billion, eight hundred seventy-one million, six hundred twenty-three thousand, five hundred sixteen".