1144506503778 has 48 divisors (see below), whose sum is σ = 2580255463968. Its totient is φ = 335632387200.

The previous prime is 1144506503753. The next prime is 1144506503827. The reversal of 1144506503778 is 8773056054411.

It is a happy number.

It is a super-2 number, since 2×1144506503778² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1144506503778.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8958951 + ... + 9085802.

It is an arithmetic number, because the mean of its divisors is an integer number (53755322166).

Almost surely, 2^{1144506503778} is an apocalyptic number.

1144506503778 is an abundant number, since it is smaller than the sum of its proper divisors (1435748960190).

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

1144506503778 is a wasteful number, since it uses less digits than its factorization.

1144506503778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18044831 (or 18044800 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 1144506503778 in words is "one trillion, one hundred forty-four billion, five hundred six million, five hundred three thousand, seven hundred seventy-eight".