9621542396862 has 32 divisors (see below), whose sum is σ = 23324951266560. Its totient is φ = 2915618907960.

The previous prime is 9621542396821. The next prime is 9621542396887. The reversal of 9621542396862 is 2686932451269.

It is a happy number.

9621542396862 is a `hidden beast` number, since 9 + 6 + 2 + 1 + 542 + 3 + 9 + 6 + 86 + 2 = 666.

It is a super-2 number, since 2×9621542396862² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9621542396862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8098940818 + ... + 8098942005.

It is an arithmetic number, because the mean of its divisors is an integer number (728904727080).

Almost surely, 2^{9621542396862} is an apocalyptic number.

9621542396862 is an abundant number, since it is smaller than the sum of its proper divisors (13703408869698).

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

9621542396862 is a wasteful number, since it uses less digits than its factorization.

9621542396862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16197882845 (or 16197882839 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 9621542396862 in words is "nine trillion, six hundred twenty-one billion, five hundred forty-two million, three hundred ninety-six thousand, eight hundred sixty-two".