42553351021540 has 12 divisors (see below), whose sum is σ = 89362037145276. Its totient is φ = 17021340408608.

The previous prime is 42553351021537. The next prime is 42553351021583. The reversal of 42553351021540 is 4512015335524.

It can be written as a sum of positive squares in 2 ways, for example, as 17274015064804 + 25279335956736 = 4156202^2 + 5027856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42553351021493 and 42553351021502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063833775519 + ... + 1063833775558.

It is an arithmetic number, because the mean of its divisors is an integer number (7446836428773).

Almost surely, 2^{42553351021540} is an apocalyptic number.

It is an amenable number.

42553351021540 is an abundant number, since it is smaller than the sum of its proper divisors (46808686123736).

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

42553351021540 is a wasteful number, since it uses less digits than its factorization.

42553351021540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127667551086 (or 2127667551084 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 42553351021540 in words is "forty-two trillion, five hundred fifty-three billion, three hundred fifty-one million, twenty-one thousand, five hundred forty".