8978675555520 has 672 divisors, whose sum is σ = 34741473661440. Its totient is φ = 2109450240000.

The previous prime is 8978675555497. The next prime is 8978675555533. The reversal of 8978675555520 is 255555768798.

8978675555520 is a `hidden beast` number, since 8 + 9 + 7 + 8 + 67 + 5 + 5 + 5 + 552 + 0 = 666.

It is a super-2 number, since 2×8978675555520² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 196107991 + ... + 196153769.

It is an arithmetic number, because the mean of its divisors is an integer number (51698621520).

Almost surely, 2^{8978675555520} is an apocalyptic number.

8978675555520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8978675555520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17370736830720).

8978675555520 is an abundant number, since it is smaller than the sum of its proper divisors (25762798105920).

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

8978675555520 is a wasteful number, since it uses less digits than its factorization.

8978675555520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46005 (or 45992 counting only the distinct ones).

The product of its (nonzero) digits is 1058400000, while the sum is 72.

The spelling of 8978675555520 in words is "eight trillion, nine hundred seventy-eight billion, six hundred seventy-five million, five hundred fifty-five thousand, five hundred twenty".