1147228478550 has 1152 divisors, whose sum is σ = 4302282636288. Its totient is φ = 219967488000.

The previous prime is 1147228478483. The next prime is 1147228478609. The reversal of 1147228478550 is 558748227411.

1147228478550 is a `hidden beast` number, since 1 + 1 + 4 + 7 + 2 + 2 + 84 + 7 + 8 + 550 = 666.

It is a super-2 number, since 2×1147228478550² (a number of 25 digits) contains 22 as substring.

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 polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 842929870 + ... + 842931230.

It is an arithmetic number, because the mean of its divisors is an integer number (3734620344).

Almost surely, 2^{1147228478550} is an apocalyptic number.

1147228478550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147228478550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151141318144).

1147228478550 is an abundant number, since it is smaller than the sum of its proper divisors (3155054157738).

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

1147228478550 is a wasteful number, since it uses less digits than its factorization.

1147228478550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 54.

The spelling of 1147228478550 in words is "one trillion, one hundred forty-seven billion, two hundred twenty-eight million, four hundred seventy-eight thousand, five hundred fifty".