1049206520778 has 512 divisors, whose sum is σ = 2648278499328. Its totient is φ = 273814732800.

The previous prime is 1049206520753. The next prime is 1049206520783. The reversal of 1049206520778 is 8770256029401.

It is a happy number.

It is a super-2 number, since 2×1049206520778² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1049206520778.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3989378275 + ... + 3989378537.

It is an arithmetic number, because the mean of its divisors is an integer number (5172418944).

Almost surely, 2^{1049206520778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1049206520778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324139249664).

1049206520778 is an abundant number, since it is smaller than the sum of its proper divisors (1599071978550).

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

1049206520778 is a wasteful number, since it uses less digits than its factorization.

1049206520778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 1049206520778 in words is "one trillion, forty-nine billion, two hundred six million, five hundred twenty thousand, seven hundred seventy-eight".