912556663920 has 640 divisors, whose sum is σ = 3645576668160. Its totient is φ = 207360000000.

The previous prime is 912556663897. The next prime is 912556663943. The reversal of 912556663920 is 29366655219.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (912556663897) and next prime (912556663943).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 101379420 + ... + 101388420.

It is an arithmetic number, because the mean of its divisors is an integer number (5696213544).

Almost surely, 2^912556663920 is an apocalyptic number.

912556663920 is a gapful number since it is divisible by the number (90) 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 912556663920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1822788334080).

912556663920 is an abundant number, since it is smaller than the sum of its proper divisors (2733020004240).

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

912556663920 is a wasteful number, since it uses less digits than its factorization.

912556663920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302 (or 9290 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 912556663920 in words is "nine hundred twelve billion, five hundred fifty-six million, six hundred sixty-three thousand, nine hundred twenty".