1078191440550 has 216 divisors, whose sum is σ = 3478379815872. Its totient is φ = 238493808000.

The previous prime is 1078191440509. The next prime is 1078191440591. The reversal of 1078191440550 is 550441918701.

1078191440550 is a `hidden beast` number, since 1 + 0 + 7 + 8 + 1 + 91 + 4 + 4 + 0 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (1078191440509) and next prime (1078191440591).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1078191440496 and 1078191440505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 105121 + ... + 1472220.

Almost surely, 2^{1078191440550} is an apocalyptic number.

1078191440550 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 1078191440550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739189907936).

1078191440550 is an abundant number, since it is smaller than the sum of its proper divisors (2400188375322).

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

1078191440550 is a wasteful number, since it uses less digits than its factorization.

1078191440550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577404 (or 1577389 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 1078191440550 in words is "one trillion, seventy-eight billion, one hundred ninety-one million, four hundred forty thousand, five hundred fifty".