1091473778304 has 1024 divisors, whose sum is σ = 4053417984000. Its totient is φ = 281506627584.

The previous prime is 1091473778281. The next prime is 1091473778323. The reversal of 1091473778304 is 4038773741901.

1091473778304 is a `hidden beast` number, since 1 + 0 + 91 + 473 + 7 + 7 + 83 + 0 + 4 = 666.

It is a super-2 number, since 2×1091473778304² (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 an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4894501137 + ... + 4894501359.

It is an arithmetic number, because the mean of its divisors is an integer number (3958416000).

Almost surely, 2^{1091473778304} is an apocalyptic number.

1091473778304 is a gapful number since it is divisible by the number (14) 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 1091473778304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026708992000).

1091473778304 is an abundant number, since it is smaller than the sum of its proper divisors (2961944205696).

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

1091473778304 is a wasteful number, since it uses less digits than its factorization.

1091473778304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 1091473778304 in words is "one trillion, ninety-one billion, four hundred seventy-three million, seven hundred seventy-eight thousand, three hundred four".