911745054990 has 320 divisors, whose sum is σ = 3074220864000. Its totient is φ = 188356181760.

The previous prime is 911745054971. The next prime is 911745055009. The reversal of 911745054990 is 99450547119.

It is a happy number.

911745054990 is a `hidden beast` number, since 9 + 1 + 1 + 7 + 4 + 5 + 0 + 549 + 90 = 666.

It is an interprime number because it is at equal distance from previous prime (911745054971) and next prime (911745055009).

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 159 ways as a sum of consecutive naturals, for example, 10747761 + ... + 10832259.

It is an arithmetic number, because the mean of its divisors is an integer number (9606940200).

Almost surely, 2^911745054990 is an apocalyptic number.

911745054990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 911745054990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537110432000).

911745054990 is an abundant number, since it is smaller than the sum of its proper divisors (2162475809010).

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

911745054990 is a wasteful number, since it uses less digits than its factorization.

911745054990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84709 (or 84700 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 911745054990 in words is "nine hundred eleven billion, seven hundred forty-five million, fifty-four thousand, nine hundred ninety".