9923928802464 has 96 divisors (see below), whose sum is σ = 27587799046080. Its totient is φ = 3112812122112.

The previous prime is 9923928802423. The next prime is 9923928802493. The reversal of 9923928802464 is 4642088293299.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×9923928802464² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9923928802395 and 9923928802404.

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, 8282742 + ... + 9404874.

It is an arithmetic number, because the mean of its divisors is an integer number (287372906730).

Almost surely, 2^{9923928802464} is an apocalyptic number.

It is an amenable number.

9923928802464 is an abundant number, since it is smaller than the sum of its proper divisors (17663870243616).

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

9923928802464 is a wasteful number, since it uses less digits than its factorization.

9923928802464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127582 (or 1127574 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 66.

The spelling of 9923928802464 in words is "nine trillion, nine hundred twenty-three billion, nine hundred twenty-eight million, eight hundred two thousand, four hundred sixty-four".