1020120552144 has 120 divisors (see below), whose sum is σ = 3090347205120. Its totient is φ = 322143283008.

The previous prime is 1020120552137. The next prime is 1020120552169. The reversal of 1020120552144 is 4412550210201.

It is a happy number.

1020120552144 is a `hidden beast` number, since 10 + 2 + 0 + 120 + 5 + 521 + 4 + 4 = 666.

1020120552144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 3114672 + ... + 3426575.

It is an arithmetic number, because the mean of its divisors is an integer number (25752893376).

Almost surely, 2^{1020120552144} is an apocalyptic number.

It is an amenable number.

1020120552144 is an abundant number, since it is smaller than the sum of its proper divisors (2070226652976).

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

1020120552144 is a wasteful number, since it uses less digits than its factorization.

1020120552144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6541302 (or 6541271 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1020120552144 its reverse (4412550210201), we get a palindrome (5432670762345).

The spelling of 1020120552144 in words is "one trillion, twenty billion, one hundred twenty million, five hundred fifty-two thousand, one hundred forty-four".